feat: Add support for typescript lang

[abhisek]

No description provided.

[safedep]

SafeDep Report Summary

No dependency changes detected. Nothing to scan.

_{This report is generated by SafeDep Github App}

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.94752% with 165 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.85%. Comparing base (aa08f82) to head (7d2d607).

Files with missing lines	Patch %	Lines
lang/ecmascript_resolvers.go	70.00%	68 Missing and 28 partials ⚠️
lang/typescript_resolvers.go	79.19%	37 Missing and 25 partials ⚠️
plugin/depsusage/ignore.go	72.22%	5 Missing ⚠️
plugin/callgraph/processors.go	92.85%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@ Coverage Diff @@## main #46 +/- ##
==========================================
+ Coverage 61.26% 62.85% +1.58% 
==========================================
Files 47 50 +3 Lines 4123 4501 +378 ==========================================
+ Hits 2526 2829 +303 - Misses 1317 1365 +48 - Partials 280 307 +27 

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[Copilot]

Pull request overview

Adds first-class TypeScript support to the code analysis framework (language detection/parsing + resolvers) and enables existing plugins (callgraph, depsusage, stripcomments) to operate on TypeScript sources.

Changes:

• Introduce a new typescript language implementation backed by the tree-sitter TSX grammar plus TypeScript-specific resolvers for classes/inheritance/abstract methods.
• Refactor JavaScript resolvers to reuse shared ECMAScript resolver helpers (imports + functions) and add shared resolver module (ecmascript_resolvers.go).
• Extend multiple plugins (callgraph, depsusage, stripcomments) to include TypeScript in supported languages, plus TS fixtures/tests and updated callgraph expectations.

Reviewed changes

Copilot reviewed 29 out of 29 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
plugin/stripcomments/stripcomments.go	Add TypeScript to StripCommentsPlugin supported languages.
plugin/stripcomments/checks.go	Treat TypeScript comment nodes like JavaScript comment nodes.
plugin/depsusage/packagehint.go	Reuse JavaScript package-hint logic for TypeScript modules.
plugin/depsusage/ignore.go	Add TypeScript-specific ignore rules and refactor require() ignore logic into a helper.
plugin/depsusage/depsusage.go	Add TypeScript to depsusage plugin supported languages.
plugin/callgraph/processors.go	Add TS-specific node processor mappings and accept TS/JS argument node variants.
plugin/callgraph/plugin_test.go	Update JS callgraph expectations to include resolved call arguments.
plugin/callgraph/plugin.go	Add TypeScript to callgraph plugin supported languages.
plugin/callgraph/imports.go	Add TypeScript module separator handling (same as JS).
plugin/callgraph/callgraph.go	Include TS abstract class nodes as DFS sources.
plugin/callgraph/builtins.json	Add TypeScript built-in identifiers list.
lang/typescript.go	New TypeScript language implementation using TSX grammar and TS resolvers.
lang/typescript_resolvers.go	New TypeScript resolvers: imports/functions + classes/inheritance/abstract methods.
lang/typescript_test.go	Unit tests for TypeScript language metadata.
lang/typescript_resolvers_test.go	Resolver tests for TS imports and function extraction fixtures.
lang/typescript_class_integration_test.go	Integration tests for TS class/inheritance resolution using fixtures.
lang/javascript_resolvers.go	Replace duplicated JS resolver logic with shared ECMAScript helpers.
lang/ecmascript_resolvers.go	New shared ECMAScript resolver helpers for JS/TS (imports + functions).
lang/factory.go	Register LanguageCodeTypescript in the language factory.
lang/fixtures/ts_simple_classes.ts	TS fixture for class/interface/enum/decorators coverage.
lang/fixtures/ts_class_hierarchy.ts	TS fixture for inheritance + implements + abstract class coverage.
lang/fixtures/imports.ts	TS fixture for ES imports + type-only imports + require().
lang/fixtures/functions.ts	TS fixture for typed functions, classes, abstract methods, decorators.
examples/plugin/main.go	Add TypeScript to example plugin supported languages.
examples/plugin/callgraph/fixtures/testFunctions.ts	Example TS callgraph fixture (functions/scopes/assignments).
examples/plugin/callgraph/fixtures/testClasses.ts	Example TS callgraph fixture (interfaces/classes/super calls).
examples/plugin/callgraph/fixtures/testClass.ts	Example TS callgraph fixture (constructors/this/union types).
examples/plugin/callgraph/fixtures/testArgs.ts	Example TS callgraph fixture for argument parsing.
core/language.go	Add LanguageCodeTypescript constant.

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