Loader options

.gitignore

@@ -102,3 +102,5 @@ dist
 
 # TernJS port file
 .tern-port
+
+.vscode

README.md

@@ -27,6 +27,14 @@ export default {
 };
 ```
 
+If the loader supports options, you pass them down like below.
+
+```js
+export default {
+ loaders: [{ options: { someOption: true }, loader: importMapLoader }],
+};
+```
+
 Then run node with the `--experimental-loader` flag:
 
 ```sh

lib/node-loader-core.js

@@ -124,8 +124,14 @@ function resolveLoaders(config) {
 
 function getLoaders(config, name) {
  return config.loaders
- .filter((loader) => loader[name])
- .map((loader) => loader[name]);
+ .filter((loader) => (loader.loader ? loader.loader[name] : loader[name]))
+ .map((loader) =>
+ loader.loader
+ ? (...args) => {
+ return loader.loader[name].apply(this, args.concat(loader.options));
+ }
+ : loader[name]
+ );
 }
 
 function flattenSequentialLoaders(config, name) {

test/fixtures/krool3.js

@@ -0,0 +1 @@
+export default "King K Rool might actually be a nice guy";

test/fixtures/yoshi-2.js

@@ -0,0 +1 @@
+export default "Yoshi doesn't deserve to be subservient to Mario";

test/load.test.js

@@ -90,4 +90,51 @@ describe("load hook", () => {
  "What if we got it all wrong and DK is the evil one?"
  );
  });
+
+ it(`supports passing down options to load hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ capitalize: true,
+ },
+ loader: {
+ load: async function (url, context, defaultLoad, loaderOptions) {
+ if (url.includes("krool3.js")) {
+ const { source: originalSource } = await defaultLoad(
+ url,
+ context
+ );
+
+ let str =
+ "I mean what did he even do to deserve Donkey Kong's wrath?";
+
+ if (loaderOptions?.capitalize) {
+ str = str.toUpperCase();
+ }
+
+ const finalSource = `${originalSource};\nexport const more = "${str}"`;
+ return {
+ format: "module",
+ source: finalSource,
+ };
+ } else {
+ return defaultLoad(url, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("./fixtures/krool3.js");
+ assert.equal(ns.default, "King K Rool might actually be a nice guy");
+
+ assert.equal(
+ ns.more,
+ "I mean what did he even do to deserve Donkey Kong's wrath?".toUpperCase()
+ );
+ });
 });

test/resolve.test.js

@@ -83,4 +83,49 @@ describe("resolve hook", () => {
  const captainFalcon = await import("captainfalcon");
  assert.equal(captainFalcon.default, "Captain Falcon 2");
  });
+
+ it(`supports passing down options to resolve hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ nocache: true,
+ },
+ loader: {
+ resolve: async function (
+ specifier,
+ context,
+ defaultResolve,
+ loaderOptions
+ ) {
+ const { parentURL = null } = context;
+
+ if (specifier === "yoshi-2") {
+ const url = new URL("./fixtures/yoshi-2.js", parentURL).href;
+
+ return {
+ url: loaderOptions?.nocache
+ ? url + `?${Math.random()}`
+ : url,
+ };
+ } else {
+ return defaultResolve(specifier, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("yoshi-2");
+ assert.equal(
+ ns.default,
+ "Yoshi doesn't deserve to be subservient to Mario"
+ );
+
+ const ns2 = await import("yoshi-2");
+ assert.notEqual(ns2, ns);
+ });
 });

.gitignore

@@ -102,3 +102,5 @@ dist
 
 # TernJS port file
 .tern-port
+
+.vscode

README.md

@@ -27,6 +27,14 @@ export default {
 };
 ```
 
+If the loader supports options, you pass them down like below.
+
+```js
+export default {
+ loaders: [{ options: { someOption: true }, loader: importMapLoader }],
+};
+```
+
 Then run node with the `--experimental-loader` flag:
 
 ```sh

lib/node-loader-core.js

@@ -124,8 +124,14 @@ function resolveLoaders(config) {
 
 function getLoaders(config, name) {
  return config.loaders
- .filter((loader) => loader[name])
- .map((loader) => loader[name]);
+ .filter((loader) => (loader.loader ? loader.loader[name] : loader[name]))
+ .map((loader) =>
+ loader.loader
+ ? (...args) => {
+ return loader.loader[name].apply(this, args.concat(loader.options));
+ }
+ : loader[name]
+ );
 }
 
 function flattenSequentialLoaders(config, name) {

test/fixtures/krool3.js

@@ -0,0 +1 @@
+export default "King K Rool might actually be a nice guy";

test/fixtures/yoshi-2.js

@@ -0,0 +1 @@
+export default "Yoshi doesn't deserve to be subservient to Mario";

test/load.test.js

@@ -90,4 +90,51 @@ describe("load hook", () => {
  "What if we got it all wrong and DK is the evil one?"
  );
  });
+
+ it(`supports passing down options to load hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ capitalize: true,
+ },
+ loader: {
+ load: async function (url, context, defaultLoad, loaderOptions) {
+ if (url.includes("krool3.js")) {
+ const { source: originalSource } = await defaultLoad(
+ url,
+ context
+ );
+
+ let str =
+ "I mean what did he even do to deserve Donkey Kong's wrath?";
+
+ if (loaderOptions?.capitalize) {
+ str = str.toUpperCase();
+ }
+
+ const finalSource = `${originalSource};\nexport const more = "${str}"`;
+ return {
+ format: "module",
+ source: finalSource,
+ };
+ } else {
+ return defaultLoad(url, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("./fixtures/krool3.js");
+ assert.equal(ns.default, "King K Rool might actually be a nice guy");
+
+ assert.equal(
+ ns.more,
+ "I mean what did he even do to deserve Donkey Kong's wrath?".toUpperCase()
+ );
+ });
 });

test/resolve.test.js

@@ -83,4 +83,49 @@ describe("resolve hook", () => {
  const captainFalcon = await import("captainfalcon");
  assert.equal(captainFalcon.default, "Captain Falcon 2");
  });
+
+ it(`supports passing down options to resolve hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ nocache: true,
+ },
+ loader: {
+ resolve: async function (
+ specifier,
+ context,
+ defaultResolve,
+ loaderOptions
+ ) {
+ const { parentURL = null } = context;
+
+ if (specifier === "yoshi-2") {
+ const url = new URL("./fixtures/yoshi-2.js", parentURL).href;
+
+ return {
+ url: loaderOptions?.nocache
+ ? url + `?${Math.random()}`
+ : url,
+ };
+ } else {
+ return defaultResolve(specifier, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("yoshi-2");
+ assert.equal(
+ ns.default,
+ "Yoshi doesn't deserve to be subservient to Mario"
+ );
+
+ const ns2 = await import("yoshi-2");
+ assert.notEqual(ns2, ns);
+ });
 });

.gitignore

@@ -102,3 +102,5 @@ dist
 
 # TernJS port file
 .tern-port
+
+.vscode

README.md

@@ -27,6 +27,14 @@ export default {
 };
 ```
 
+If the loader supports options, you pass them down like below.
+
+```js
+export default {
+ loaders: [{ options: { someOption: true }, loader: importMapLoader }],
+};
+```
+
 Then run node with the `--experimental-loader` flag:
 
 ```sh

lib/node-loader-core.js

@@ -124,8 +124,14 @@ function resolveLoaders(config) {
 
 function getLoaders(config, name) {
  return config.loaders
- .filter((loader) => loader[name])
- .map((loader) => loader[name]);
+ .filter((loader) => (loader.loader ? loader.loader[name] : loader[name]))
+ .map((loader) =>
+ loader.loader
+ ? (...args) => {
+ return loader.loader[name].apply(this, args.concat(loader.options));
+ }
+ : loader[name]
+ );
 }
 
 function flattenSequentialLoaders(config, name) {

test/fixtures/krool3.js

@@ -0,0 +1 @@
+export default "King K Rool might actually be a nice guy";

test/fixtures/yoshi-2.js

@@ -0,0 +1 @@
+export default "Yoshi doesn't deserve to be subservient to Mario";

test/load.test.js

@@ -90,4 +90,51 @@ describe("load hook", () => {
  "What if we got it all wrong and DK is the evil one?"
  );
  });
+
+ it(`supports passing down options to load hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ capitalize: true,
+ },
+ loader: {
+ load: async function (url, context, defaultLoad, loaderOptions) {
+ if (url.includes("krool3.js")) {
+ const { source: originalSource } = await defaultLoad(
+ url,
+ context
+ );
+
+ let str =
+ "I mean what did he even do to deserve Donkey Kong's wrath?";
+
+ if (loaderOptions?.capitalize) {
+ str = str.toUpperCase();
+ }
+
+ const finalSource = `${originalSource};\nexport const more = "${str}"`;
+ return {
+ format: "module",
+ source: finalSource,
+ };
+ } else {
+ return defaultLoad(url, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("./fixtures/krool3.js");
+ assert.equal(ns.default, "King K Rool might actually be a nice guy");
+
+ assert.equal(
+ ns.more,
+ "I mean what did he even do to deserve Donkey Kong's wrath?".toUpperCase()
+ );
+ });
 });

test/resolve.test.js

@@ -83,4 +83,49 @@ describe("resolve hook", () => {
  const captainFalcon = await import("captainfalcon");
  assert.equal(captainFalcon.default, "Captain Falcon 2");
  });
+
+ it(`supports passing down options to resolve hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ nocache: true,
+ },
+ loader: {
+ resolve: async function (
+ specifier,
+ context,
+ defaultResolve,
+ loaderOptions
+ ) {
+ const { parentURL = null } = context;
+
+ if (specifier === "yoshi-2") {
+ const url = new URL("./fixtures/yoshi-2.js", parentURL).href;
+
+ return {
+ url: loaderOptions?.nocache
+ ? url + `?${Math.random()}`
+ : url,
+ };
+ } else {
+ return defaultResolve(specifier, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("yoshi-2");
+ assert.equal(
+ ns.default,
+ "Yoshi doesn't deserve to be subservient to Mario"
+ );
+
+ const ns2 = await import("yoshi-2");
+ assert.notEqual(ns2, ns);
+ });
 });

.gitignore

@@ -102,3 +102,5 @@ dist
 
 # TernJS port file
 .tern-port
+
+.vscode

README.md

@@ -27,6 +27,14 @@ export default {
 };
 ```
 
+If the loader supports options, you pass them down like below.
+
+```js
+export default {
+ loaders: [{ options: { someOption: true }, loader: importMapLoader }],
+};
+```
+
 Then run node with the `--experimental-loader` flag:
 
 ```sh

lib/node-loader-core.js

@@ -124,8 +124,14 @@ function resolveLoaders(config) {
 
 function getLoaders(config, name) {
  return config.loaders
- .filter((loader) => loader[name])
- .map((loader) => loader[name]);
+ .filter((loader) => (loader.loader ? loader.loader[name] : loader[name]))
+ .map((loader) =>
+ loader.loader
+ ? (...args) => {
+ return loader.loader[name].apply(this, args.concat(loader.options));
+ }
+ : loader[name]
+ );
 }
 
 function flattenSequentialLoaders(config, name) {

test/fixtures/krool3.js

@@ -0,0 +1 @@
+export default "King K Rool might actually be a nice guy";

test/fixtures/yoshi-2.js

@@ -0,0 +1 @@
+export default "Yoshi doesn't deserve to be subservient to Mario";

test/load.test.js

@@ -90,4 +90,51 @@ describe("load hook", () => {
  "What if we got it all wrong and DK is the evil one?"
  );
  });
+
+ it(`supports passing down options to load hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ capitalize: true,
+ },
+ loader: {
+ load: async function (url, context, defaultLoad, loaderOptions) {
+ if (url.includes("krool3.js")) {
+ const { source: originalSource } = await defaultLoad(
+ url,
+ context
+ );
+
+ let str =
+ "I mean what did he even do to deserve Donkey Kong's wrath?";
+
+ if (loaderOptions?.capitalize) {
+ str = str.toUpperCase();
+ }
+
+ const finalSource = `${originalSource};\nexport const more = "${str}"`;
+ return {
+ format: "module",
+ source: finalSource,
+ };
+ } else {
+ return defaultLoad(url, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("./fixtures/krool3.js");
+ assert.equal(ns.default, "King K Rool might actually be a nice guy");
+
+ assert.equal(
+ ns.more,
+ "I mean what did he even do to deserve Donkey Kong's wrath?".toUpperCase()
+ );
+ });
 });

test/resolve.test.js

@@ -83,4 +83,49 @@ describe("resolve hook", () => {
  const captainFalcon = await import("captainfalcon");
  assert.equal(captainFalcon.default, "Captain Falcon 2");
  });
+
+ it(`supports passing down options to resolve hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ nocache: true,
+ },
+ loader: {
+ resolve: async function (
+ specifier,
+ context,
+ defaultResolve,
+ loaderOptions
+ ) {
+ const { parentURL = null } = context;
+
+ if (specifier === "yoshi-2") {
+ const url = new URL("./fixtures/yoshi-2.js", parentURL).href;
+
+ return {
+ url: loaderOptions?.nocache
+ ? url + `?${Math.random()}`
+ : url,
+ };
+ } else {
+ return defaultResolve(specifier, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("yoshi-2");
+ assert.equal(
+ ns.default,
+ "Yoshi doesn't deserve to be subservient to Mario"
+ );
+
+ const ns2 = await import("yoshi-2");
+ assert.notEqual(ns2, ns);
+ });
 });

.gitignore

@@ -102,3 +102,5 @@ dist
 
 # TernJS port file
 .tern-port
+
+.vscode

README.md

@@ -27,6 +27,14 @@ export default {
 };
 ```
 
+If the loader supports options, you pass them down like below.
+
+```js
+export default {
+ loaders: [{ options: { someOption: true }, loader: importMapLoader }],
+};
+```
+
 Then run node with the `--experimental-loader` flag:
 
 ```sh

lib/node-loader-core.js

@@ -124,8 +124,14 @@ function resolveLoaders(config) {
 
 function getLoaders(config, name) {
  return config.loaders
- .filter((loader) => loader[name])
- .map((loader) => loader[name]);
+ .filter((loader) => (loader.loader ? loader.loader[name] : loader[name]))
+ .map((loader) =>
+ loader.loader
+ ? (...args) => {
+ return loader.loader[name].apply(this, args.concat(loader.options));
+ }
+ : loader[name]
+ );
 }
 
 function flattenSequentialLoaders(config, name) {

test/fixtures/krool3.js

@@ -0,0 +1 @@
+export default "King K Rool might actually be a nice guy";

test/fixtures/yoshi-2.js

@@ -0,0 +1 @@
+export default "Yoshi doesn't deserve to be subservient to Mario";

test/load.test.js

@@ -90,4 +90,51 @@ describe("load hook", () => {
  "What if we got it all wrong and DK is the evil one?"
  );
  });
+
+ it(`supports passing down options to load hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ capitalize: true,
+ },
+ loader: {
+ load: async function (url, context, defaultLoad, loaderOptions) {
+ if (url.includes("krool3.js")) {
+ const { source: originalSource } = await defaultLoad(
+ url,
+ context
+ );
+
+ let str =
+ "I mean what did he even do to deserve Donkey Kong's wrath?";
+
+ if (loaderOptions?.capitalize) {
+ str = str.toUpperCase();
+ }
+
+ const finalSource = `${originalSource};\nexport const more = "${str}"`;
+ return {
+ format: "module",
+ source: finalSource,
+ };
+ } else {
+ return defaultLoad(url, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("./fixtures/krool3.js");
+ assert.equal(ns.default, "King K Rool might actually be a nice guy");
+
+ assert.equal(
+ ns.more,
+ "I mean what did he even do to deserve Donkey Kong's wrath?".toUpperCase()
+ );
+ });
 });

test/resolve.test.js

@@ -83,4 +83,49 @@ describe("resolve hook", () => {
  const captainFalcon = await import("captainfalcon");
  assert.equal(captainFalcon.default, "Captain Falcon 2");
  });
+
+ it(`supports passing down options to resolve hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ nocache: true,
+ },
+ loader: {
+ resolve: async function (
+ specifier,
+ context,
+ defaultResolve,
+ loaderOptions
+ ) {
+ const { parentURL = null } = context;
+
+ if (specifier === "yoshi-2") {
+ const url = new URL("./fixtures/yoshi-2.js", parentURL).href;
+
+ return {
+ url: loaderOptions?.nocache
+ ? url + `?${Math.random()}`
+ : url,
+ };
+ } else {
+ return defaultResolve(specifier, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("yoshi-2");
+ assert.equal(
+ ns.default,
+ "Yoshi doesn't deserve to be subservient to Mario"
+ );
+
+ const ns2 = await import("yoshi-2");
+ assert.notEqual(ns2, ns);
+ });
 });

.gitignore

@@ -102,3 +102,5 @@ dist
 
 # TernJS port file
 .tern-port
+
+.vscode

README.md

@@ -27,6 +27,14 @@ export default {
 };
 ```
 
+If the loader supports options, you pass them down like below.
+
+```js
+export default {
+ loaders: [{ options: { someOption: true }, loader: importMapLoader }],
+};
+```
+
 Then run node with the `--experimental-loader` flag:
 
 ```sh

lib/node-loader-core.js

@@ -124,8 +124,14 @@ function resolveLoaders(config) {
 
 function getLoaders(config, name) {
  return config.loaders
- .filter((loader) => loader[name])
- .map((loader) => loader[name]);
+ .filter((loader) => (loader.loader ? loader.loader[name] : loader[name]))
+ .map((loader) =>
+ loader.loader
+ ? (...args) => {
+ return loader.loader[name].apply(this, args.concat(loader.options));
+ }
+ : loader[name]
+ );
 }
 
 function flattenSequentialLoaders(config, name) {

test/fixtures/krool3.js

@@ -0,0 +1 @@
+export default "King K Rool might actually be a nice guy";

test/fixtures/yoshi-2.js

@@ -0,0 +1 @@
+export default "Yoshi doesn't deserve to be subservient to Mario";

test/load.test.js

@@ -90,4 +90,51 @@ describe("load hook", () => {
  "What if we got it all wrong and DK is the evil one?"
  );
  });
+
+ it(`supports passing down options to load hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ capitalize: true,
+ },
+ loader: {
+ load: async function (url, context, defaultLoad, loaderOptions) {
+ if (url.includes("krool3.js")) {
+ const { source: originalSource } = await defaultLoad(
+ url,
+ context
+ );
+
+ let str =
+ "I mean what did he even do to deserve Donkey Kong's wrath?";
+
+ if (loaderOptions?.capitalize) {
+ str = str.toUpperCase();
+ }
+
+ const finalSource = `${originalSource};\nexport const more = "${str}"`;
+ return {
+ format: "module",
+ source: finalSource,
+ };
+ } else {
+ return defaultLoad(url, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("./fixtures/krool3.js");
+ assert.equal(ns.default, "King K Rool might actually be a nice guy");
+
+ assert.equal(
+ ns.more,
+ "I mean what did he even do to deserve Donkey Kong's wrath?".toUpperCase()
+ );
+ });
 });

test/resolve.test.js

@@ -83,4 +83,49 @@ describe("resolve hook", () => {
  const captainFalcon = await import("captainfalcon");
  assert.equal(captainFalcon.default, "Captain Falcon 2");
  });
+
+ it(`supports passing down options to resolve hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ nocache: true,
+ },
+ loader: {
+ resolve: async function (
+ specifier,
+ context,
+ defaultResolve,
+ loaderOptions
+ ) {
+ const { parentURL = null } = context;
+
+ if (specifier === "yoshi-2") {
+ const url = new URL("./fixtures/yoshi-2.js", parentURL).href;
+
+ return {
+ url: loaderOptions?.nocache
+ ? url + `?${Math.random()}`
+ : url,
+ };
+ } else {
+ return defaultResolve(specifier, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("yoshi-2");
+ assert.equal(
+ ns.default,
+ "Yoshi doesn't deserve to be subservient to Mario"
+ );
+
+ const ns2 = await import("yoshi-2");
+ assert.notEqual(ns2, ns);
+ });
 });

.gitignore

@@ -102,3 +102,5 @@ dist
 
 # TernJS port file
 .tern-port
+
+.vscode

README.md

@@ -27,6 +27,14 @@ export default {
 };
 ```
 
+If the loader supports options, you pass them down like below.
+
+```js
+export default {
+ loaders: [{ options: { someOption: true }, loader: importMapLoader }],
+};
+```
+
 Then run node with the `--experimental-loader` flag:
 
 ```sh

lib/node-loader-core.js

@@ -124,8 +124,14 @@ function resolveLoaders(config) {
 
 function getLoaders(config, name) {
  return config.loaders
- .filter((loader) => loader[name])
- .map((loader) => loader[name]);
+ .filter((loader) => (loader.loader ? loader.loader[name] : loader[name]))
+ .map((loader) =>
+ loader.loader
+ ? (...args) => {
+ return loader.loader[name].apply(this, args.concat(loader.options));
+ }
+ : loader[name]
+ );
 }
 
 function flattenSequentialLoaders(config, name) {

test/fixtures/krool3.js

@@ -0,0 +1 @@
+export default "King K Rool might actually be a nice guy";

test/fixtures/yoshi-2.js

@@ -0,0 +1 @@
+export default "Yoshi doesn't deserve to be subservient to Mario";

test/load.test.js

@@ -90,4 +90,51 @@ describe("load hook", () => {
  "What if we got it all wrong and DK is the evil one?"
  );
  });
+
+ it(`supports passing down options to load hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ capitalize: true,
+ },
+ loader: {
+ load: async function (url, context, defaultLoad, loaderOptions) {
+ if (url.includes("krool3.js")) {
+ const { source: originalSource } = await defaultLoad(
+ url,
+ context
+ );
+
+ let str =
+ "I mean what did he even do to deserve Donkey Kong's wrath?";
+
+ if (loaderOptions?.capitalize) {
+ str = str.toUpperCase();
+ }
+
+ const finalSource = `${originalSource};\nexport const more = "${str}"`;
+ return {
+ format: "module",
+ source: finalSource,
+ };
+ } else {
+ return defaultLoad(url, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("./fixtures/krool3.js");
+ assert.equal(ns.default, "King K Rool might actually be a nice guy");
+
+ assert.equal(
+ ns.more,
+ "I mean what did he even do to deserve Donkey Kong's wrath?".toUpperCase()
+ );
+ });
 });

test/resolve.test.js

@@ -83,4 +83,49 @@ describe("resolve hook", () => {
  const captainFalcon = await import("captainfalcon");
  assert.equal(captainFalcon.default, "Captain Falcon 2");
  });
+
+ it(`supports passing down options to resolve hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ nocache: true,
+ },
+ loader: {
+ resolve: async function (
+ specifier,
+ context,
+ defaultResolve,
+ loaderOptions
+ ) {
+ const { parentURL = null } = context;
+
+ if (specifier === "yoshi-2") {
+ const url = new URL("./fixtures/yoshi-2.js", parentURL).href;
+
+ return {
+ url: loaderOptions?.nocache
+ ? url + `?${Math.random()}`
+ : url,
+ };
+ } else {
+ return defaultResolve(specifier, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("yoshi-2");
+ assert.equal(
+ ns.default,
+ "Yoshi doesn't deserve to be subservient to Mario"
+ );
+
+ const ns2 = await import("yoshi-2");
+ assert.notEqual(ns2, ns);
+ });
 });

.gitignore

@@ -102,3 +102,5 @@ dist
 
 # TernJS port file
 .tern-port
+
+.vscode

README.md

@@ -27,6 +27,14 @@ export default {
 };
 ```
 
+If the loader supports options, you pass them down like below.
+
+```js
+export default {
+ loaders: [{ options: { someOption: true }, loader: importMapLoader }],
+};
+```
+
 Then run node with the `--experimental-loader` flag:
 
 ```sh

lib/node-loader-core.js

@@ -124,8 +124,14 @@ function resolveLoaders(config) {
 
 function getLoaders(config, name) {
  return config.loaders
- .filter((loader) => loader[name])
- .map((loader) => loader[name]);
+ .filter((loader) => (loader.loader ? loader.loader[name] : loader[name]))
+ .map((loader) =>
+ loader.loader
+ ? (...args) => {
+ return loader.loader[name].apply(this, args.concat(loader.options));
+ }
+ : loader[name]
+ );
 }
 
 function flattenSequentialLoaders(config, name) {

test/fixtures/krool3.js

@@ -0,0 +1 @@
+export default "King K Rool might actually be a nice guy";

test/fixtures/yoshi-2.js

@@ -0,0 +1 @@
+export default "Yoshi doesn't deserve to be subservient to Mario";

test/load.test.js

@@ -90,4 +90,51 @@ describe("load hook", () => {
  "What if we got it all wrong and DK is the evil one?"
  );
  });
+
+ it(`supports passing down options to load hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ capitalize: true,
+ },
+ loader: {
+ load: async function (url, context, defaultLoad, loaderOptions) {
+ if (url.includes("krool3.js")) {
+ const { source: originalSource } = await defaultLoad(
+ url,
+ context
+ );
+
+ let str =
+ "I mean what did he even do to deserve Donkey Kong's wrath?";
+
+ if (loaderOptions?.capitalize) {
+ str = str.toUpperCase();
+ }
+
+ const finalSource = `${originalSource};\nexport const more = "${str}"`;
+ return {
+ format: "module",
+ source: finalSource,
+ };
+ } else {
+ return defaultLoad(url, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("./fixtures/krool3.js");
+ assert.equal(ns.default, "King K Rool might actually be a nice guy");
+
+ assert.equal(
+ ns.more,
+ "I mean what did he even do to deserve Donkey Kong's wrath?".toUpperCase()
+ );
+ });
 });

test/resolve.test.js

@@ -83,4 +83,49 @@ describe("resolve hook", () => {
  const captainFalcon = await import("captainfalcon");
  assert.equal(captainFalcon.default, "Captain Falcon 2");
  });
+
+ it(`supports passing down options to resolve hook`, async () => {
+ global.nodeLoader.setConfigPromise(
+ Promise.resolve({
+ loaders: [
+ {
+ options: {
+ nocache: true,
+ },
+ loader: {
+ resolve: async function (
+ specifier,
+ context,
+ defaultResolve,
+ loaderOptions
+ ) {
+ const { parentURL = null } = context;
+
+ if (specifier === "yoshi-2") {
+ const url = new URL("./fixtures/yoshi-2.js", parentURL).href;
+
+ return {
+ url: loaderOptions?.nocache
+ ? url + `?${Math.random()}`
+ : url,
+ };
+ } else {
+ return defaultResolve(specifier, context);
+ }
+ },
+ },
+ },
+ ],
+ })
+ );
+
+ const ns = await import("yoshi-2");
+ assert.equal(
+ ns.default,
+ "Yoshi doesn't deserve to be subservient to Mario"
+ );
+
+ const ns2 = await import("yoshi-2");
+ assert.notEqual(ns2, ns);
+ });
 });