fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution - #2122

Merged
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml
Aug 27, 2026
Merged

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution#2122
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml

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What

Add a nested overrides entry forcing @aws-cdk/toolkit-lib's yaml dependency to ^1.

Why

@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types")at import time — a subpath that only exists in yaml v1. yaml@2 (pulled transitively, e.g. via the lint-staged devDep) has an exports map that does not expose ./types, so any install topology that resolves toolkit-lib's yaml to the hoisted v2 fails to load the module with:

Cannot find module 'yaml/types' (ERR_PACKAGE_PATH_NOT_EXPORTED)

This is especially dangerous for bun compile, which inlines toolkit-lib (only bundle() marks it external) and embeds whatever yaml/types the build machine resolves.

Fix

"overrides": {
"@aws-cdk/toolkit-lib": { "yaml": "^1" }
}

Guarantees toolkit-lib always resolves the nested yaml@1 copy (which ships types.js).

Testing

  • Verified require.resolve('yaml/types') from toolkit-lib resolves to the v1 nested copy under both node and bun.
  • Reproduced the v2 failure (ERR_PACKAGE_PATH_NOT_EXPORTED) and confirmed the override prevents it.
  • project deploy (CDK synth + CloudFormation) exercised end-to-end after the change.

@github-actionsgithub-actionsBot added the size/xs PR size: XS label Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added claude-security-reviewing Claude Code /security-review in progress agentcore-harness-reviewing AgentCore Harness review in progress labels Aug 26, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
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looking into failing CI

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AgentCore Harness Review

Verdict: Changes requested

The override itself is correct and well-motivated — @aws-cdk/toolkit-lib@1.38.2 declares yaml: ^1, its yaml-cfn.js does require("yaml/types") which only resolves in yaml@1.x (v2 has no ./types in its exports map), and pinning the nested yaml to ^1 matches upstream's declared range. Bun supports npm's nested overrides syntax, so this works for both npm and bun install paths.

Issue: bun.lock is not updated

package.json is the only file changed in this PR, but every CI workflow in this repo runs bun install --frozen-lockfile (.github/workflows/build.yml, unit-test.yml, check.yml). Bun's --frozen-lockfile errors out when package.json and bun.lock disagree, which is what an added override does — the resolved yaml version under @aws-cdk/toolkit-lib in the lockfile will not reflect the new constraint until the lockfile is regenerated.

This matches what's happening on the PR: all build, unit-test, and check jobs across Linux/macOS/Windows are currently failing.

Fix: run bun install locally (without --frozen-lockfile) and commit the updated bun.lock alongside the package.json change. That will both make CI pass and ensure downstream bun compile builds embed the v1 copy of yaml/types deterministically (which is the whole point of the fix).

Once the lockfile is regenerated, it's worth spot-checking the bun.lock diff to confirm the toolkit-lib yaml entry is pinned to a 1.x version — that verifies the override actually took effect rather than silently being ignored.

@agentcore-devx-automationagentcore-devx-automationBot removed the agentcore-harness-reviewing AgentCore Harness review in progress label Aug 26, 2026
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from be50d65 to d93c63bCompareAugust 26, 2026 23:48
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
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forgot to commit bun.lock earlier just added it

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.41%. Comparing base (9ab30d3) to head (367f995).

Additional details and impacted files
@@ Coverage Diff @@## refactor #2122 +/- ##
=========================================
Coverage 97.41% 97.41% =========================================
Files 453 453 Lines 27637 27637 =========================================
Hits 26922 26922 Misses 715 715 

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

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CI windows failure seems like it's from the branch but let me confirm

…solution
@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types") at import
time, a subpath that only exists in yaml v1. When an install topology
resolves toolkit-lib's yaml to the hoisted yaml v2 (whose exports map
blocks ./types), the module fails to load with
ERR_PACKAGE_PATH_NOT_EXPORTED ("Cannot find module 'yaml/types'").
This bites bun compile, which inlines toolkit-lib and embeds whatever
the build machine resolves.
Add a nested override forcing toolkit-lib's yaml to ^1 so it always
resolves the v1 nested copy that ships yaml/types.
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from d93c63b to 367f995CompareAugust 27, 2026 00:06
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 27, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026

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makes sense. I'm not still not fully clear on why its resolving in the wrong version if its pinned here https://github.com/aws/aws-cdk-cli/blob/02523f01b0a45a04582628ef3cd53160a3287032/packages/%40aws-cdk/toolkit-lib/package.json#L132, but I guess its because its not bundled in, so it tries to pull it in at runtime via require which doesn't check the version.

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Yeah, require just grabs the first yaml on disk, doesn't check the version. Override pins v1 so it always lands there

@notgitika
notgitika merged commit a1f2f32 into aws:refactorAug 27, 2026
19 of 21 checks passed
@notgitika
notgitika deleted the fix-toolkit-lib-yaml branch August 27, 2026 06:00
AlexanderRichey added a commit that referenced this pull request Aug 31, 2026
bun 1.4.0 — which CI installs via the unpinned setup-bun@v2 — records
nested package.json overrides in the lockfile and refuses frozen
installs when they are missing, so every CI job fails with "lockfile
had changes, but lockfile is frozen" (the base refactor branch's own
CI run on 2026-08-31 fails the same way; runs from 2026-08-28 under
the previous bun were green). The bun that last saved this lockfile
predated nested-override recording and silently dropped the
@aws-cdk/toolkit-lib yaml pin from #2122.
Regenerated with bun 1.4.0. The only changes are lockfileVersion
1 -> 3 and the recorded override block — zero resolution changes
("Checked 766 installs across 703 packages (no changes)"). The full
CI gate passes under bun 1.4.0: frozen install, 2513 tests, tsc,
oxlint, prettier.
Note: lockfileVersion 3 requires bun >= 1.4.0 for lockfile-honoring
installs; older bun prints "Ignoring lockfile" (it cannot represent
the nested override either way, so there is no lockfile both versions
accept).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XfADH54TZn2SSGUUixft8P
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@notgitika@codecov-commenter@Hweinstock
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Skip to content

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution - #2122

Merged
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml
Aug 27, 2026
Merged

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution#2122
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml

Conversation

@notgitika

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What

Add a nested overrides entry forcing @aws-cdk/toolkit-lib's yaml dependency to ^1.

Why

@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types")at import time — a subpath that only exists in yaml v1. yaml@2 (pulled transitively, e.g. via the lint-staged devDep) has an exports map that does not expose ./types, so any install topology that resolves toolkit-lib's yaml to the hoisted v2 fails to load the module with:

Cannot find module 'yaml/types' (ERR_PACKAGE_PATH_NOT_EXPORTED)

This is especially dangerous for bun compile, which inlines toolkit-lib (only bundle() marks it external) and embeds whatever yaml/types the build machine resolves.

Fix

"overrides": {
"@aws-cdk/toolkit-lib": { "yaml": "^1" }
}

Guarantees toolkit-lib always resolves the nested yaml@1 copy (which ships types.js).

Testing

  • Verified require.resolve('yaml/types') from toolkit-lib resolves to the v1 nested copy under both node and bun.
  • Reproduced the v2 failure (ERR_PACKAGE_PATH_NOT_EXPORTED) and confirmed the override prevents it.
  • project deploy (CDK synth + CloudFormation) exercised end-to-end after the change.

@github-actionsgithub-actionsBot added the size/xs PR size: XS label Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added claude-security-reviewing Claude Code /security-review in progress agentcore-harness-reviewing AgentCore Harness review in progress labels Aug 26, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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looking into failing CI

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AgentCore Harness Review

Verdict: Changes requested

The override itself is correct and well-motivated — @aws-cdk/toolkit-lib@1.38.2 declares yaml: ^1, its yaml-cfn.js does require("yaml/types") which only resolves in yaml@1.x (v2 has no ./types in its exports map), and pinning the nested yaml to ^1 matches upstream's declared range. Bun supports npm's nested overrides syntax, so this works for both npm and bun install paths.

Issue: bun.lock is not updated

package.json is the only file changed in this PR, but every CI workflow in this repo runs bun install --frozen-lockfile (.github/workflows/build.yml, unit-test.yml, check.yml). Bun's --frozen-lockfile errors out when package.json and bun.lock disagree, which is what an added override does — the resolved yaml version under @aws-cdk/toolkit-lib in the lockfile will not reflect the new constraint until the lockfile is regenerated.

This matches what's happening on the PR: all build, unit-test, and check jobs across Linux/macOS/Windows are currently failing.

Fix: run bun install locally (without --frozen-lockfile) and commit the updated bun.lock alongside the package.json change. That will both make CI pass and ensure downstream bun compile builds embed the v1 copy of yaml/types deterministically (which is the whole point of the fix).

Once the lockfile is regenerated, it's worth spot-checking the bun.lock diff to confirm the toolkit-lib yaml entry is pinned to a 1.x version — that verifies the override actually took effect rather than silently being ignored.

@agentcore-devx-automationagentcore-devx-automationBot removed the agentcore-harness-reviewing AgentCore Harness review in progress label Aug 26, 2026
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from be50d65 to d93c63bCompareAugust 26, 2026 23:48
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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forgot to commit bun.lock earlier just added it

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@codecov-commenter

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.41%. Comparing base (9ab30d3) to head (367f995).

Additional details and impacted files
@@ Coverage Diff @@## refactor #2122 +/- ##
=========================================
Coverage 97.41% 97.41% =========================================
Files 453 453 Lines 27637 27637 =========================================
Hits 26922 26922 Misses 715 715 

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@notgitika

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CI windows failure seems like it's from the branch but let me confirm

…solution
@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types") at import
time, a subpath that only exists in yaml v1. When an install topology
resolves toolkit-lib's yaml to the hoisted yaml v2 (whose exports map
blocks ./types), the module fails to load with
ERR_PACKAGE_PATH_NOT_EXPORTED ("Cannot find module 'yaml/types'").
This bites bun compile, which inlines toolkit-lib and embeds whatever
the build machine resolves.
Add a nested override forcing toolkit-lib's yaml to ^1 so it always
resolves the v1 nested copy that ships yaml/types.
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from d93c63b to 367f995CompareAugust 27, 2026 00:06
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 27, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026

@HweinstockHweinstock left a comment

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makes sense. I'm not still not fully clear on why its resolving in the wrong version if its pinned here https://github.com/aws/aws-cdk-cli/blob/02523f01b0a45a04582628ef3cd53160a3287032/packages/%40aws-cdk/toolkit-lib/package.json#L132, but I guess its because its not bundled in, so it tries to pull it in at runtime via require which doesn't check the version.

@notgitika

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Yeah, require just grabs the first yaml on disk, doesn't check the version. Override pins v1 so it always lands there

@notgitika
notgitika merged commit a1f2f32 into aws:refactorAug 27, 2026
19 of 21 checks passed
@notgitika
notgitika deleted the fix-toolkit-lib-yaml branch August 27, 2026 06:00
AlexanderRichey added a commit that referenced this pull request Aug 31, 2026
bun 1.4.0 — which CI installs via the unpinned setup-bun@v2 — records
nested package.json overrides in the lockfile and refuses frozen
installs when they are missing, so every CI job fails with "lockfile
had changes, but lockfile is frozen" (the base refactor branch's own
CI run on 2026-08-31 fails the same way; runs from 2026-08-28 under
the previous bun were green). The bun that last saved this lockfile
predated nested-override recording and silently dropped the
@aws-cdk/toolkit-lib yaml pin from #2122.
Regenerated with bun 1.4.0. The only changes are lockfileVersion
1 -> 3 and the recorded override block — zero resolution changes
("Checked 766 installs across 703 packages (no changes)"). The full
CI gate passes under bun 1.4.0: frozen install, 2513 tests, tsc,
oxlint, prettier.
Note: lockfileVersion 3 requires bun >= 1.4.0 for lockfile-honoring
installs; older bun prints "Ignoring lockfile" (it cannot represent
the nested override either way, so there is no lockfile both versions
accept).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XfADH54TZn2SSGUUixft8P
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@notgitika@codecov-commenter@Hweinstock
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution - #2122

Merged
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml
Aug 27, 2026
Merged

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution#2122
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml

Conversation

@notgitika

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What

Add a nested overrides entry forcing @aws-cdk/toolkit-lib's yaml dependency to ^1.

Why

@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types")at import time — a subpath that only exists in yaml v1. yaml@2 (pulled transitively, e.g. via the lint-staged devDep) has an exports map that does not expose ./types, so any install topology that resolves toolkit-lib's yaml to the hoisted v2 fails to load the module with:

Cannot find module 'yaml/types' (ERR_PACKAGE_PATH_NOT_EXPORTED)

This is especially dangerous for bun compile, which inlines toolkit-lib (only bundle() marks it external) and embeds whatever yaml/types the build machine resolves.

Fix

"overrides": {
"@aws-cdk/toolkit-lib": { "yaml": "^1" }
}

Guarantees toolkit-lib always resolves the nested yaml@1 copy (which ships types.js).

Testing

  • Verified require.resolve('yaml/types') from toolkit-lib resolves to the v1 nested copy under both node and bun.
  • Reproduced the v2 failure (ERR_PACKAGE_PATH_NOT_EXPORTED) and confirmed the override prevents it.
  • project deploy (CDK synth + CloudFormation) exercised end-to-end after the change.

@github-actionsgithub-actionsBot added the size/xs PR size: XS label Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added claude-security-reviewing Claude Code /security-review in progress agentcore-harness-reviewing AgentCore Harness review in progress labels Aug 26, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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looking into failing CI

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AgentCore Harness Review

Verdict: Changes requested

The override itself is correct and well-motivated — @aws-cdk/toolkit-lib@1.38.2 declares yaml: ^1, its yaml-cfn.js does require("yaml/types") which only resolves in yaml@1.x (v2 has no ./types in its exports map), and pinning the nested yaml to ^1 matches upstream's declared range. Bun supports npm's nested overrides syntax, so this works for both npm and bun install paths.

Issue: bun.lock is not updated

package.json is the only file changed in this PR, but every CI workflow in this repo runs bun install --frozen-lockfile (.github/workflows/build.yml, unit-test.yml, check.yml). Bun's --frozen-lockfile errors out when package.json and bun.lock disagree, which is what an added override does — the resolved yaml version under @aws-cdk/toolkit-lib in the lockfile will not reflect the new constraint until the lockfile is regenerated.

This matches what's happening on the PR: all build, unit-test, and check jobs across Linux/macOS/Windows are currently failing.

Fix: run bun install locally (without --frozen-lockfile) and commit the updated bun.lock alongside the package.json change. That will both make CI pass and ensure downstream bun compile builds embed the v1 copy of yaml/types deterministically (which is the whole point of the fix).

Once the lockfile is regenerated, it's worth spot-checking the bun.lock diff to confirm the toolkit-lib yaml entry is pinned to a 1.x version — that verifies the override actually took effect rather than silently being ignored.

@agentcore-devx-automationagentcore-devx-automationBot removed the agentcore-harness-reviewing AgentCore Harness review in progress label Aug 26, 2026
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from be50d65 to d93c63bCompareAugust 26, 2026 23:48
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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forgot to commit bun.lock earlier just added it

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@codecov-commenter

codecov-commenter commented Aug 26, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.41%. Comparing base (9ab30d3) to head (367f995).

Additional details and impacted files
@@ Coverage Diff @@## refactor #2122 +/- ##
=========================================
Coverage 97.41% 97.41% =========================================
Files 453 453 Lines 27637 27637 =========================================
Hits 26922 26922 Misses 715 715 

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@notgitika

Copy link
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ContributorAuthor

CI windows failure seems like it's from the branch but let me confirm

…solution
@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types") at import
time, a subpath that only exists in yaml v1. When an install topology
resolves toolkit-lib's yaml to the hoisted yaml v2 (whose exports map
blocks ./types), the module fails to load with
ERR_PACKAGE_PATH_NOT_EXPORTED ("Cannot find module 'yaml/types'").
This bites bun compile, which inlines toolkit-lib and embeds whatever
the build machine resolves.
Add a nested override forcing toolkit-lib's yaml to ^1 so it always
resolves the v1 nested copy that ships yaml/types.
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from d93c63b to 367f995CompareAugust 27, 2026 00:06
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 27, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026

@HweinstockHweinstock left a comment

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makes sense. I'm not still not fully clear on why its resolving in the wrong version if its pinned here https://github.com/aws/aws-cdk-cli/blob/02523f01b0a45a04582628ef3cd53160a3287032/packages/%40aws-cdk/toolkit-lib/package.json#L132, but I guess its because its not bundled in, so it tries to pull it in at runtime via require which doesn't check the version.

@notgitika

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Yeah, require just grabs the first yaml on disk, doesn't check the version. Override pins v1 so it always lands there

@notgitika
notgitika merged commit a1f2f32 into aws:refactorAug 27, 2026
19 of 21 checks passed
@notgitika
notgitika deleted the fix-toolkit-lib-yaml branch August 27, 2026 06:00
AlexanderRichey added a commit that referenced this pull request Aug 31, 2026
bun 1.4.0 — which CI installs via the unpinned setup-bun@v2 — records
nested package.json overrides in the lockfile and refuses frozen
installs when they are missing, so every CI job fails with "lockfile
had changes, but lockfile is frozen" (the base refactor branch's own
CI run on 2026-08-31 fails the same way; runs from 2026-08-28 under
the previous bun were green). The bun that last saved this lockfile
predated nested-override recording and silently dropped the
@aws-cdk/toolkit-lib yaml pin from #2122.
Regenerated with bun 1.4.0. The only changes are lockfileVersion
1 -> 3 and the recorded override block — zero resolution changes
("Checked 766 installs across 703 packages (no changes)"). The full
CI gate passes under bun 1.4.0: frozen install, 2513 tests, tsc,
oxlint, prettier.
Note: lockfileVersion 3 requires bun >= 1.4.0 for lockfile-honoring
installs; older bun prints "Ignoring lockfile" (it cannot represent
the nested override either way, so there is no lockfile both versions
accept).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XfADH54TZn2SSGUUixft8P
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

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@notgitika@codecov-commenter@Hweinstock
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution - #2122

Merged
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml
Aug 27, 2026
Merged

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution#2122
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml

Conversation

@notgitika

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What

Add a nested overrides entry forcing @aws-cdk/toolkit-lib's yaml dependency to ^1.

Why

@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types")at import time — a subpath that only exists in yaml v1. yaml@2 (pulled transitively, e.g. via the lint-staged devDep) has an exports map that does not expose ./types, so any install topology that resolves toolkit-lib's yaml to the hoisted v2 fails to load the module with:

Cannot find module 'yaml/types' (ERR_PACKAGE_PATH_NOT_EXPORTED)

This is especially dangerous for bun compile, which inlines toolkit-lib (only bundle() marks it external) and embeds whatever yaml/types the build machine resolves.

Fix

"overrides": {
"@aws-cdk/toolkit-lib": { "yaml": "^1" }
}

Guarantees toolkit-lib always resolves the nested yaml@1 copy (which ships types.js).

Testing

  • Verified require.resolve('yaml/types') from toolkit-lib resolves to the v1 nested copy under both node and bun.
  • Reproduced the v2 failure (ERR_PACKAGE_PATH_NOT_EXPORTED) and confirmed the override prevents it.
  • project deploy (CDK synth + CloudFormation) exercised end-to-end after the change.

@github-actionsgithub-actionsBot added the size/xs PR size: XS label Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added claude-security-reviewing Claude Code /security-review in progress agentcore-harness-reviewing AgentCore Harness review in progress labels Aug 26, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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looking into failing CI

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AgentCore Harness Review

Verdict: Changes requested

The override itself is correct and well-motivated — @aws-cdk/toolkit-lib@1.38.2 declares yaml: ^1, its yaml-cfn.js does require("yaml/types") which only resolves in yaml@1.x (v2 has no ./types in its exports map), and pinning the nested yaml to ^1 matches upstream's declared range. Bun supports npm's nested overrides syntax, so this works for both npm and bun install paths.

Issue: bun.lock is not updated

package.json is the only file changed in this PR, but every CI workflow in this repo runs bun install --frozen-lockfile (.github/workflows/build.yml, unit-test.yml, check.yml). Bun's --frozen-lockfile errors out when package.json and bun.lock disagree, which is what an added override does — the resolved yaml version under @aws-cdk/toolkit-lib in the lockfile will not reflect the new constraint until the lockfile is regenerated.

This matches what's happening on the PR: all build, unit-test, and check jobs across Linux/macOS/Windows are currently failing.

Fix: run bun install locally (without --frozen-lockfile) and commit the updated bun.lock alongside the package.json change. That will both make CI pass and ensure downstream bun compile builds embed the v1 copy of yaml/types deterministically (which is the whole point of the fix).

Once the lockfile is regenerated, it's worth spot-checking the bun.lock diff to confirm the toolkit-lib yaml entry is pinned to a 1.x version — that verifies the override actually took effect rather than silently being ignored.

@agentcore-devx-automationagentcore-devx-automationBot removed the agentcore-harness-reviewing AgentCore Harness review in progress label Aug 26, 2026
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from be50d65 to d93c63bCompareAugust 26, 2026 23:48
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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forgot to commit bun.lock earlier just added it

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@codecov-commenter

codecov-commenter commented Aug 26, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.41%. Comparing base (9ab30d3) to head (367f995).

Additional details and impacted files
@@ Coverage Diff @@## refactor #2122 +/- ##
=========================================
Coverage 97.41% 97.41% =========================================
Files 453 453 Lines 27637 27637 =========================================
Hits 26922 26922 Misses 715 715 

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@notgitika

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ContributorAuthor

CI windows failure seems like it's from the branch but let me confirm

…solution
@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types") at import
time, a subpath that only exists in yaml v1. When an install topology
resolves toolkit-lib's yaml to the hoisted yaml v2 (whose exports map
blocks ./types), the module fails to load with
ERR_PACKAGE_PATH_NOT_EXPORTED ("Cannot find module 'yaml/types'").
This bites bun compile, which inlines toolkit-lib and embeds whatever
the build machine resolves.
Add a nested override forcing toolkit-lib's yaml to ^1 so it always
resolves the v1 nested copy that ships yaml/types.
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from d93c63b to 367f995CompareAugust 27, 2026 00:06
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 27, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026
@agentcore-devx-automation

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026

@HweinstockHweinstock left a comment

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makes sense. I'm not still not fully clear on why its resolving in the wrong version if its pinned here https://github.com/aws/aws-cdk-cli/blob/02523f01b0a45a04582628ef3cd53160a3287032/packages/%40aws-cdk/toolkit-lib/package.json#L132, but I guess its because its not bundled in, so it tries to pull it in at runtime via require which doesn't check the version.

@notgitika

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Yeah, require just grabs the first yaml on disk, doesn't check the version. Override pins v1 so it always lands there

@notgitika
notgitika merged commit a1f2f32 into aws:refactorAug 27, 2026
19 of 21 checks passed
@notgitika
notgitika deleted the fix-toolkit-lib-yaml branch August 27, 2026 06:00
AlexanderRichey added a commit that referenced this pull request Aug 31, 2026
bun 1.4.0 — which CI installs via the unpinned setup-bun@v2 — records
nested package.json overrides in the lockfile and refuses frozen
installs when they are missing, so every CI job fails with "lockfile
had changes, but lockfile is frozen" (the base refactor branch's own
CI run on 2026-08-31 fails the same way; runs from 2026-08-28 under
the previous bun were green). The bun that last saved this lockfile
predated nested-override recording and silently dropped the
@aws-cdk/toolkit-lib yaml pin from #2122.
Regenerated with bun 1.4.0. The only changes are lockfileVersion
1 -> 3 and the recorded override block — zero resolution changes
("Checked 766 installs across 703 packages (no changes)"). The full
CI gate passes under bun 1.4.0: frozen install, 2513 tests, tsc,
oxlint, prettier.
Note: lockfileVersion 3 requires bun >= 1.4.0 for lockfile-honoring
installs; older bun prints "Ignoring lockfile" (it cannot represent
the nested override either way, so there is no lockfile both versions
accept).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XfADH54TZn2SSGUUixft8P
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

Labels

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Development

Successfully merging this pull request may close these issues.

3 participants

@notgitika@codecov-commenter@Hweinstock
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
Skip to content

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution - #2122

Merged
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml
Aug 27, 2026
Merged

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution#2122
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml

Conversation

@notgitika

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Contributor

What

Add a nested overrides entry forcing @aws-cdk/toolkit-lib's yaml dependency to ^1.

Why

@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types")at import time — a subpath that only exists in yaml v1. yaml@2 (pulled transitively, e.g. via the lint-staged devDep) has an exports map that does not expose ./types, so any install topology that resolves toolkit-lib's yaml to the hoisted v2 fails to load the module with:

Cannot find module 'yaml/types' (ERR_PACKAGE_PATH_NOT_EXPORTED)

This is especially dangerous for bun compile, which inlines toolkit-lib (only bundle() marks it external) and embeds whatever yaml/types the build machine resolves.

Fix

"overrides": {
"@aws-cdk/toolkit-lib": { "yaml": "^1" }
}

Guarantees toolkit-lib always resolves the nested yaml@1 copy (which ships types.js).

Testing

  • Verified require.resolve('yaml/types') from toolkit-lib resolves to the v1 nested copy under both node and bun.
  • Reproduced the v2 failure (ERR_PACKAGE_PATH_NOT_EXPORTED) and confirmed the override prevents it.
  • project deploy (CDK synth + CloudFormation) exercised end-to-end after the change.

@github-actionsgithub-actionsBot added the size/xs PR size: XS label Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added claude-security-reviewing Claude Code /security-review in progress agentcore-harness-reviewing AgentCore Harness review in progress labels Aug 26, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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looking into failing CI

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AgentCore Harness Review

Verdict: Changes requested

The override itself is correct and well-motivated — @aws-cdk/toolkit-lib@1.38.2 declares yaml: ^1, its yaml-cfn.js does require("yaml/types") which only resolves in yaml@1.x (v2 has no ./types in its exports map), and pinning the nested yaml to ^1 matches upstream's declared range. Bun supports npm's nested overrides syntax, so this works for both npm and bun install paths.

Issue: bun.lock is not updated

package.json is the only file changed in this PR, but every CI workflow in this repo runs bun install --frozen-lockfile (.github/workflows/build.yml, unit-test.yml, check.yml). Bun's --frozen-lockfile errors out when package.json and bun.lock disagree, which is what an added override does — the resolved yaml version under @aws-cdk/toolkit-lib in the lockfile will not reflect the new constraint until the lockfile is regenerated.

This matches what's happening on the PR: all build, unit-test, and check jobs across Linux/macOS/Windows are currently failing.

Fix: run bun install locally (without --frozen-lockfile) and commit the updated bun.lock alongside the package.json change. That will both make CI pass and ensure downstream bun compile builds embed the v1 copy of yaml/types deterministically (which is the whole point of the fix).

Once the lockfile is regenerated, it's worth spot-checking the bun.lock diff to confirm the toolkit-lib yaml entry is pinned to a 1.x version — that verifies the override actually took effect rather than silently being ignored.

@agentcore-devx-automationagentcore-devx-automationBot removed the agentcore-harness-reviewing AgentCore Harness review in progress label Aug 26, 2026
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from be50d65 to d93c63bCompareAugust 26, 2026 23:48
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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forgot to commit bun.lock earlier just added it

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@codecov-commenter

codecov-commenter commented Aug 26, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.41%. Comparing base (9ab30d3) to head (367f995).

Additional details and impacted files
@@ Coverage Diff @@## refactor #2122 +/- ##
=========================================
Coverage 97.41% 97.41% =========================================
Files 453 453 Lines 27637 27637 =========================================
Hits 26922 26922 Misses 715 715 

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@notgitika

Copy link
Copy Markdown
ContributorAuthor

CI windows failure seems like it's from the branch but let me confirm

…solution
@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types") at import
time, a subpath that only exists in yaml v1. When an install topology
resolves toolkit-lib's yaml to the hoisted yaml v2 (whose exports map
blocks ./types), the module fails to load with
ERR_PACKAGE_PATH_NOT_EXPORTED ("Cannot find module 'yaml/types'").
This bites bun compile, which inlines toolkit-lib and embeds whatever
the build machine resolves.
Add a nested override forcing toolkit-lib's yaml to ^1 so it always
resolves the v1 nested copy that ships yaml/types.
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from d93c63b to 367f995CompareAugust 27, 2026 00:06
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 27, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026
@agentcore-devx-automation

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026

@HweinstockHweinstock left a comment

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makes sense. I'm not still not fully clear on why its resolving in the wrong version if its pinned here https://github.com/aws/aws-cdk-cli/blob/02523f01b0a45a04582628ef3cd53160a3287032/packages/%40aws-cdk/toolkit-lib/package.json#L132, but I guess its because its not bundled in, so it tries to pull it in at runtime via require which doesn't check the version.

@notgitika

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ContributorAuthor

Yeah, require just grabs the first yaml on disk, doesn't check the version. Override pins v1 so it always lands there

@notgitika
notgitika merged commit a1f2f32 into aws:refactorAug 27, 2026
19 of 21 checks passed
@notgitika
notgitika deleted the fix-toolkit-lib-yaml branch August 27, 2026 06:00
AlexanderRichey added a commit that referenced this pull request Aug 31, 2026
bun 1.4.0 — which CI installs via the unpinned setup-bun@v2 — records
nested package.json overrides in the lockfile and refuses frozen
installs when they are missing, so every CI job fails with "lockfile
had changes, but lockfile is frozen" (the base refactor branch's own
CI run on 2026-08-31 fails the same way; runs from 2026-08-28 under
the previous bun were green). The bun that last saved this lockfile
predated nested-override recording and silently dropped the
@aws-cdk/toolkit-lib yaml pin from #2122.
Regenerated with bun 1.4.0. The only changes are lockfileVersion
1 -> 3 and the recorded override block — zero resolution changes
("Checked 766 installs across 703 packages (no changes)"). The full
CI gate passes under bun 1.4.0: frozen install, 2513 tests, tsc,
oxlint, prettier.
Note: lockfileVersion 3 requires bun >= 1.4.0 for lockfile-honoring
installs; older bun prints "Ignoring lockfile" (it cannot represent
the nested override either way, so there is no lockfile both versions
accept).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XfADH54TZn2SSGUUixft8P
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3 participants

@notgitika@codecov-commenter@Hweinstock
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution - #2122

Merged
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml
Aug 27, 2026
Merged

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution#2122
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml

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@notgitika

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What

Add a nested overrides entry forcing @aws-cdk/toolkit-lib's yaml dependency to ^1.

Why

@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types")at import time — a subpath that only exists in yaml v1. yaml@2 (pulled transitively, e.g. via the lint-staged devDep) has an exports map that does not expose ./types, so any install topology that resolves toolkit-lib's yaml to the hoisted v2 fails to load the module with:

Cannot find module 'yaml/types' (ERR_PACKAGE_PATH_NOT_EXPORTED)

This is especially dangerous for bun compile, which inlines toolkit-lib (only bundle() marks it external) and embeds whatever yaml/types the build machine resolves.

Fix

"overrides": {
"@aws-cdk/toolkit-lib": { "yaml": "^1" }
}

Guarantees toolkit-lib always resolves the nested yaml@1 copy (which ships types.js).

Testing

  • Verified require.resolve('yaml/types') from toolkit-lib resolves to the v1 nested copy under both node and bun.
  • Reproduced the v2 failure (ERR_PACKAGE_PATH_NOT_EXPORTED) and confirmed the override prevents it.
  • project deploy (CDK synth + CloudFormation) exercised end-to-end after the change.

@github-actionsgithub-actionsBot added the size/xs PR size: XS label Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added claude-security-reviewing Claude Code /security-review in progress agentcore-harness-reviewing AgentCore Harness review in progress labels Aug 26, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
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looking into failing CI

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AgentCore Harness Review

Verdict: Changes requested

The override itself is correct and well-motivated — @aws-cdk/toolkit-lib@1.38.2 declares yaml: ^1, its yaml-cfn.js does require("yaml/types") which only resolves in yaml@1.x (v2 has no ./types in its exports map), and pinning the nested yaml to ^1 matches upstream's declared range. Bun supports npm's nested overrides syntax, so this works for both npm and bun install paths.

Issue: bun.lock is not updated

package.json is the only file changed in this PR, but every CI workflow in this repo runs bun install --frozen-lockfile (.github/workflows/build.yml, unit-test.yml, check.yml). Bun's --frozen-lockfile errors out when package.json and bun.lock disagree, which is what an added override does — the resolved yaml version under @aws-cdk/toolkit-lib in the lockfile will not reflect the new constraint until the lockfile is regenerated.

This matches what's happening on the PR: all build, unit-test, and check jobs across Linux/macOS/Windows are currently failing.

Fix: run bun install locally (without --frozen-lockfile) and commit the updated bun.lock alongside the package.json change. That will both make CI pass and ensure downstream bun compile builds embed the v1 copy of yaml/types deterministically (which is the whole point of the fix).

Once the lockfile is regenerated, it's worth spot-checking the bun.lock diff to confirm the toolkit-lib yaml entry is pinned to a 1.x version — that verifies the override actually took effect rather than silently being ignored.

@agentcore-devx-automationagentcore-devx-automationBot removed the agentcore-harness-reviewing AgentCore Harness review in progress label Aug 26, 2026
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from be50d65 to d93c63bCompareAugust 26, 2026 23:48
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
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forgot to commit bun.lock earlier just added it

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@codecov-commenter

codecov-commenter commented Aug 26, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.41%. Comparing base (9ab30d3) to head (367f995).

Additional details and impacted files
@@ Coverage Diff @@## refactor #2122 +/- ##
=========================================
Coverage 97.41% 97.41% =========================================
Files 453 453 Lines 27637 27637 =========================================
Hits 26922 26922 Misses 715 715 

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@notgitika

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CI windows failure seems like it's from the branch but let me confirm

…solution
@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types") at import
time, a subpath that only exists in yaml v1. When an install topology
resolves toolkit-lib's yaml to the hoisted yaml v2 (whose exports map
blocks ./types), the module fails to load with
ERR_PACKAGE_PATH_NOT_EXPORTED ("Cannot find module 'yaml/types'").
This bites bun compile, which inlines toolkit-lib and embeds whatever
the build machine resolves.
Add a nested override forcing toolkit-lib's yaml to ^1 so it always
resolves the v1 nested copy that ships yaml/types.
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from d93c63b to 367f995CompareAugust 27, 2026 00:06
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 27, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026

@HweinstockHweinstock left a comment

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makes sense. I'm not still not fully clear on why its resolving in the wrong version if its pinned here https://github.com/aws/aws-cdk-cli/blob/02523f01b0a45a04582628ef3cd53160a3287032/packages/%40aws-cdk/toolkit-lib/package.json#L132, but I guess its because its not bundled in, so it tries to pull it in at runtime via require which doesn't check the version.

@notgitika

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Yeah, require just grabs the first yaml on disk, doesn't check the version. Override pins v1 so it always lands there

@notgitika
notgitika merged commit a1f2f32 into aws:refactorAug 27, 2026
19 of 21 checks passed
@notgitika
notgitika deleted the fix-toolkit-lib-yaml branch August 27, 2026 06:00
AlexanderRichey added a commit that referenced this pull request Aug 31, 2026
bun 1.4.0 — which CI installs via the unpinned setup-bun@v2 — records
nested package.json overrides in the lockfile and refuses frozen
installs when they are missing, so every CI job fails with "lockfile
had changes, but lockfile is frozen" (the base refactor branch's own
CI run on 2026-08-31 fails the same way; runs from 2026-08-28 under
the previous bun were green). The bun that last saved this lockfile
predated nested-override recording and silently dropped the
@aws-cdk/toolkit-lib yaml pin from #2122.
Regenerated with bun 1.4.0. The only changes are lockfileVersion
1 -> 3 and the recorded override block — zero resolution changes
("Checked 766 installs across 703 packages (no changes)"). The full
CI gate passes under bun 1.4.0: frozen install, 2513 tests, tsc,
oxlint, prettier.
Note: lockfileVersion 3 requires bun >= 1.4.0 for lockfile-honoring
installs; older bun prints "Ignoring lockfile" (it cannot represent
the nested override either way, so there is no lockfile both versions
accept).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XfADH54TZn2SSGUUixft8P
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

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@notgitika@codecov-commenter@Hweinstock
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution - #2122

Merged
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml
Aug 27, 2026
Merged

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution#2122
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml

Conversation

@notgitika

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What

Add a nested overrides entry forcing @aws-cdk/toolkit-lib's yaml dependency to ^1.

Why

@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types")at import time — a subpath that only exists in yaml v1. yaml@2 (pulled transitively, e.g. via the lint-staged devDep) has an exports map that does not expose ./types, so any install topology that resolves toolkit-lib's yaml to the hoisted v2 fails to load the module with:

Cannot find module 'yaml/types' (ERR_PACKAGE_PATH_NOT_EXPORTED)

This is especially dangerous for bun compile, which inlines toolkit-lib (only bundle() marks it external) and embeds whatever yaml/types the build machine resolves.

Fix

"overrides": {
"@aws-cdk/toolkit-lib": { "yaml": "^1" }
}

Guarantees toolkit-lib always resolves the nested yaml@1 copy (which ships types.js).

Testing

  • Verified require.resolve('yaml/types') from toolkit-lib resolves to the v1 nested copy under both node and bun.
  • Reproduced the v2 failure (ERR_PACKAGE_PATH_NOT_EXPORTED) and confirmed the override prevents it.
  • project deploy (CDK synth + CloudFormation) exercised end-to-end after the change.

@github-actionsgithub-actionsBot added the size/xs PR size: XS label Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added claude-security-reviewing Claude Code /security-review in progress agentcore-harness-reviewing AgentCore Harness review in progress labels Aug 26, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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looking into failing CI

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AgentCore Harness Review

Verdict: Changes requested

The override itself is correct and well-motivated — @aws-cdk/toolkit-lib@1.38.2 declares yaml: ^1, its yaml-cfn.js does require("yaml/types") which only resolves in yaml@1.x (v2 has no ./types in its exports map), and pinning the nested yaml to ^1 matches upstream's declared range. Bun supports npm's nested overrides syntax, so this works for both npm and bun install paths.

Issue: bun.lock is not updated

package.json is the only file changed in this PR, but every CI workflow in this repo runs bun install --frozen-lockfile (.github/workflows/build.yml, unit-test.yml, check.yml). Bun's --frozen-lockfile errors out when package.json and bun.lock disagree, which is what an added override does — the resolved yaml version under @aws-cdk/toolkit-lib in the lockfile will not reflect the new constraint until the lockfile is regenerated.

This matches what's happening on the PR: all build, unit-test, and check jobs across Linux/macOS/Windows are currently failing.

Fix: run bun install locally (without --frozen-lockfile) and commit the updated bun.lock alongside the package.json change. That will both make CI pass and ensure downstream bun compile builds embed the v1 copy of yaml/types deterministically (which is the whole point of the fix).

Once the lockfile is regenerated, it's worth spot-checking the bun.lock diff to confirm the toolkit-lib yaml entry is pinned to a 1.x version — that verifies the override actually took effect rather than silently being ignored.

@agentcore-devx-automationagentcore-devx-automationBot removed the agentcore-harness-reviewing AgentCore Harness review in progress label Aug 26, 2026
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from be50d65 to d93c63bCompareAugust 26, 2026 23:48
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
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forgot to commit bun.lock earlier just added it

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@codecov-commenter

codecov-commenter commented Aug 26, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.41%. Comparing base (9ab30d3) to head (367f995).

Additional details and impacted files
@@ Coverage Diff @@## refactor #2122 +/- ##
=========================================
Coverage 97.41% 97.41% =========================================
Files 453 453 Lines 27637 27637 =========================================
Hits 26922 26922 Misses 715 715 

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
  • 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

@notgitika

Copy link
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ContributorAuthor

CI windows failure seems like it's from the branch but let me confirm

…solution
@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types") at import
time, a subpath that only exists in yaml v1. When an install topology
resolves toolkit-lib's yaml to the hoisted yaml v2 (whose exports map
blocks ./types), the module fails to load with
ERR_PACKAGE_PATH_NOT_EXPORTED ("Cannot find module 'yaml/types'").
This bites bun compile, which inlines toolkit-lib and embeds whatever
the build machine resolves.
Add a nested override forcing toolkit-lib's yaml to ^1 so it always
resolves the v1 nested copy that ships yaml/types.
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from d93c63b to 367f995CompareAugust 27, 2026 00:06
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 27, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026
@agentcore-devx-automation

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026

@HweinstockHweinstock left a comment

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makes sense. I'm not still not fully clear on why its resolving in the wrong version if its pinned here https://github.com/aws/aws-cdk-cli/blob/02523f01b0a45a04582628ef3cd53160a3287032/packages/%40aws-cdk/toolkit-lib/package.json#L132, but I guess its because its not bundled in, so it tries to pull it in at runtime via require which doesn't check the version.

@notgitika

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ContributorAuthor

Yeah, require just grabs the first yaml on disk, doesn't check the version. Override pins v1 so it always lands there

@notgitika
notgitika merged commit a1f2f32 into aws:refactorAug 27, 2026
19 of 21 checks passed
@notgitika
notgitika deleted the fix-toolkit-lib-yaml branch August 27, 2026 06:00
AlexanderRichey added a commit that referenced this pull request Aug 31, 2026
bun 1.4.0 — which CI installs via the unpinned setup-bun@v2 — records
nested package.json overrides in the lockfile and refuses frozen
installs when they are missing, so every CI job fails with "lockfile
had changes, but lockfile is frozen" (the base refactor branch's own
CI run on 2026-08-31 fails the same way; runs from 2026-08-28 under
the previous bun were green). The bun that last saved this lockfile
predated nested-override recording and silently dropped the
@aws-cdk/toolkit-lib yaml pin from #2122.
Regenerated with bun 1.4.0. The only changes are lockfileVersion
1 -> 3 and the recorded override block — zero resolution changes
("Checked 766 installs across 703 packages (no changes)"). The full
CI gate passes under bun 1.4.0: frozen install, 2513 tests, tsc,
oxlint, prettier.
Note: lockfileVersion 3 requires bun >= 1.4.0 for lockfile-honoring
installs; older bun prints "Ignoring lockfile" (it cannot represent
the nested override either way, so there is no lockfile both versions
accept).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XfADH54TZn2SSGUUixft8P
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

Labels

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Successfully merging this pull request may close these issues.

3 participants

@notgitika@codecov-commenter@Hweinstock
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
Skip to content

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution - #2122

Merged
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml
Aug 27, 2026
Merged

fix(deps): pin @aws-cdk/toolkit-lib yaml to v1 to fix 'yaml/types' resolution#2122
notgitika merged 1 commit into
aws:refactorfrom
notgitika:fix-toolkit-lib-yaml

Conversation

@notgitika

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What

Add a nested overrides entry forcing @aws-cdk/toolkit-lib's yaml dependency to ^1.

Why

@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types")at import time — a subpath that only exists in yaml v1. yaml@2 (pulled transitively, e.g. via the lint-staged devDep) has an exports map that does not expose ./types, so any install topology that resolves toolkit-lib's yaml to the hoisted v2 fails to load the module with:

Cannot find module 'yaml/types' (ERR_PACKAGE_PATH_NOT_EXPORTED)

This is especially dangerous for bun compile, which inlines toolkit-lib (only bundle() marks it external) and embeds whatever yaml/types the build machine resolves.

Fix

"overrides": {
"@aws-cdk/toolkit-lib": { "yaml": "^1" }
}

Guarantees toolkit-lib always resolves the nested yaml@1 copy (which ships types.js).

Testing

  • Verified require.resolve('yaml/types') from toolkit-lib resolves to the v1 nested copy under both node and bun.
  • Reproduced the v2 failure (ERR_PACKAGE_PATH_NOT_EXPORTED) and confirmed the override prevents it.
  • project deploy (CDK synth + CloudFormation) exercised end-to-end after the change.

@github-actionsgithub-actionsBot added the size/xs PR size: XS label Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added claude-security-reviewing Claude Code /security-review in progress agentcore-harness-reviewing AgentCore Harness review in progress labels Aug 26, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
@notgitika

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looking into failing CI

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AgentCore Harness Review

Verdict: Changes requested

The override itself is correct and well-motivated — @aws-cdk/toolkit-lib@1.38.2 declares yaml: ^1, its yaml-cfn.js does require("yaml/types") which only resolves in yaml@1.x (v2 has no ./types in its exports map), and pinning the nested yaml to ^1 matches upstream's declared range. Bun supports npm's nested overrides syntax, so this works for both npm and bun install paths.

Issue: bun.lock is not updated

package.json is the only file changed in this PR, but every CI workflow in this repo runs bun install --frozen-lockfile (.github/workflows/build.yml, unit-test.yml, check.yml). Bun's --frozen-lockfile errors out when package.json and bun.lock disagree, which is what an added override does — the resolved yaml version under @aws-cdk/toolkit-lib in the lockfile will not reflect the new constraint until the lockfile is regenerated.

This matches what's happening on the PR: all build, unit-test, and check jobs across Linux/macOS/Windows are currently failing.

Fix: run bun install locally (without --frozen-lockfile) and commit the updated bun.lock alongside the package.json change. That will both make CI pass and ensure downstream bun compile builds embed the v1 copy of yaml/types deterministically (which is the whole point of the fix).

Once the lockfile is regenerated, it's worth spot-checking the bun.lock diff to confirm the toolkit-lib yaml entry is pinned to a 1.x version — that verifies the override actually took effect rather than silently being ignored.

@agentcore-devx-automationagentcore-devx-automationBot removed the agentcore-harness-reviewing AgentCore Harness review in progress label Aug 26, 2026
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from be50d65 to d93c63bCompareAugust 26, 2026 23:48
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 26, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
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forgot to commit bun.lock earlier just added it

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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 26, 2026
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codecov-commenter commented Aug 26, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.41%. Comparing base (9ab30d3) to head (367f995).

Additional details and impacted files
@@ Coverage Diff @@## refactor #2122 +/- ##
=========================================
Coverage 97.41% 97.41% =========================================
Files 453 453 Lines 27637 27637 =========================================
Hits 26922 26922 Misses 715 715 

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CI windows failure seems like it's from the branch but let me confirm

…solution
@aws-cdk/toolkit-lib's yaml-cfn.js does require("yaml/types") at import
time, a subpath that only exists in yaml v1. When an install topology
resolves toolkit-lib's yaml to the hoisted yaml v2 (whose exports map
blocks ./types), the module fails to load with
ERR_PACKAGE_PATH_NOT_EXPORTED ("Cannot find module 'yaml/types'").
This bites bun compile, which inlines toolkit-lib and embeds whatever
the build machine resolves.
Add a nested override forcing toolkit-lib's yaml to ^1 so it always
resolves the v1 nested copy that ships yaml/types.
@notgitika
notgitikaforce-pushed the fix-toolkit-lib-yaml branch from d93c63b to 367f995CompareAugust 27, 2026 00:06
@github-actionsgithub-actionsBot added size/xs PR size: XS and removed size/xs PR size: XS labels Aug 27, 2026
@agentcore-devx-automationagentcore-devx-automationBot added the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026
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Claude Security Review: no high-confidence findings. (run)

@agentcore-devx-automationagentcore-devx-automationBot removed the claude-security-reviewing Claude Code /security-review in progress label Aug 27, 2026

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makes sense. I'm not still not fully clear on why its resolving in the wrong version if its pinned here https://github.com/aws/aws-cdk-cli/blob/02523f01b0a45a04582628ef3cd53160a3287032/packages/%40aws-cdk/toolkit-lib/package.json#L132, but I guess its because its not bundled in, so it tries to pull it in at runtime via require which doesn't check the version.

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Yeah, require just grabs the first yaml on disk, doesn't check the version. Override pins v1 so it always lands there

@notgitika
notgitika merged commit a1f2f32 into aws:refactorAug 27, 2026
19 of 21 checks passed
@notgitika
notgitika deleted the fix-toolkit-lib-yaml branch August 27, 2026 06:00
AlexanderRichey added a commit that referenced this pull request Aug 31, 2026
bun 1.4.0 — which CI installs via the unpinned setup-bun@v2 — records
nested package.json overrides in the lockfile and refuses frozen
installs when they are missing, so every CI job fails with "lockfile
had changes, but lockfile is frozen" (the base refactor branch's own
CI run on 2026-08-31 fails the same way; runs from 2026-08-28 under
the previous bun were green). The bun that last saved this lockfile
predated nested-override recording and silently dropped the
@aws-cdk/toolkit-lib yaml pin from #2122.
Regenerated with bun 1.4.0. The only changes are lockfileVersion
1 -> 3 and the recorded override block — zero resolution changes
("Checked 766 installs across 703 packages (no changes)"). The full
CI gate passes under bun 1.4.0: frozen install, 2513 tests, tsc,
oxlint, prettier.
Note: lockfileVersion 3 requires bun >= 1.4.0 for lockfile-honoring
installs; older bun prints "Ignoring lockfile" (it cannot represent
the nested override either way, so there is no lockfile both versions
accept).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01XfADH54TZn2SSGUUixft8P
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