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GeezerVison is showing github.com — esm: link modules synchronously when no async loader hooks are used · nodejs/node@2fafe4c

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  • lib/internal/modules/esm
    • loader.js
    • module_job.js
  • test/es-module
    • test-esm-error-cache.js
    • test-esm-import-attributes-errors.js
    • test-esm-import-attributes-errors.mjs
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‎lib/internal/modules/esm/loader.js‎

Copy file name to clipboardExpand all lines: lib/internal/modules/esm/loader.js
+13-5Lines changed: 13 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -65,6 +65,8 @@ let debug = require('internal/util/debuglog').debuglog('esm', (fn) => {
6565
debug = fn;
6666
});
6767

68+
const { isPromise } = require('internal/util/types');
69+
6870
/**
6971
* @typedef {import('./hooks.js').HooksProxy} HooksProxy
7072
* @typedef {import('./module_job.js').ModuleJobBase} ModuleJobBase
@@ -592,15 +594,21 @@ class ModuleLoader {
592594

593595
/**
594596
* Load a module and translate it into a ModuleWrap for ordinary imported ESM.
595-
* This is run asynchronously.
597+
* This may be run asynchronously if there are asynchronous module loader hooks registered.
596598
* @param {string} url URL of the module to be translated.
597599
* @param {object} loadContext See {@link load}
598600
* @param {boolean} isMain Whether the module to be translated is the entry point.
599-
* @returns {Promise<ModuleWrap>}
601+
* @returns {Promise<ModuleWrap>|ModuleWrap}
600602
*/
601-
async loadAndTranslate(url, loadContext, isMain) {
602-
const { format, source } = await this.load(url, loadContext);
603-
return this.#translate(url, format, source, isMain);
603+
loadAndTranslate(url, loadContext, isMain) {
604+
const maybePromise = this.load(url, loadContext);
605+
const afterLoad = ({ format, source }) => {
606+
return this.#translate(url, format, source, isMain);
607+
};
608+
if (isPromise(maybePromise)) {
609+
return maybePromise.then(afterLoad);
610+
}
611+
return afterLoad(maybePromise);
604612
}
605613

606614
/**
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‎lib/internal/modules/esm/module_job.js‎

Copy file name to clipboardExpand all lines: lib/internal/modules/esm/module_job.js
+5-5Lines changed: 5 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -37,6 +37,7 @@ const {
3737
},
3838
} = internalBinding('util');
3939
const { decorateErrorStack, kEmptyObject } = require('internal/util');
40+
const { isPromise } = require('internal/util/types');
4041
const {
4142
getSourceMapsSupport,
4243
} = require('internal/source_map/source_map_cache');
@@ -138,12 +139,11 @@ class ModuleJob extends ModuleJobBase {
138139
this.#loader = loader;
139140

140141
// Expose the promise to the ModuleWrap directly for linking below.
141-
if (isForRequireInImportedCJS) {
142-
this.module = moduleOrModulePromise;
143-
assert(this.module instanceof ModuleWrap);
144-
this.modulePromise = PromiseResolve(this.module);
145-
} else {
142+
if (isPromise(moduleOrModulePromise)) {
146143
this.modulePromise = moduleOrModulePromise;
144+
} else {
145+
this.module = moduleOrModulePromise;
146+
this.modulePromise = PromiseResolve(moduleOrModulePromise);
147147
}
148148

149149
if (this.phase === kEvaluationPhase) {
Collapse file

‎test/es-module/test-esm-error-cache.js‎

Copy file name to clipboardExpand all lines: test/es-module/test-esm-error-cache.js
+3-1Lines changed: 3 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -19,7 +19,9 @@ let error;
1919
await assert.rejects(
2020
() => import(file),
2121
(e) => {
22-
assert.strictEqual(error, e);
22+
// The module may be compiled again and a new SyntaxError would be thrown but
23+
// with the same content.
24+
assert.deepStrictEqual(error, e);
2325
return true;
2426
}
2527
);
Collapse file

‎test/es-module/test-esm-import-attributes-errors.js‎

Copy file name to clipboardExpand all lines: test/es-module/test-esm-import-attributes-errors.js
+2-2Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -28,7 +28,7 @@ async function test() {
2828

2929
await rejects(
3030
import(jsModuleDataUrl, { with: { type: 'json', other: 'unsupported' } }),
31-
{ code: 'ERR_IMPORT_ATTRIBUTE_TYPE_INCOMPATIBLE' }
31+
{ code: 'ERR_IMPORT_ATTRIBUTE_UNSUPPORTED' }
3232
);
3333

3434
await rejects(
@@ -48,7 +48,7 @@ async function test() {
4848

4949
await rejects(
5050
import(jsonModuleDataUrl, { with: { foo: 'bar' } }),
51-
{ code: 'ERR_IMPORT_ATTRIBUTE_MISSING' }
51+
{ code: 'ERR_IMPORT_ATTRIBUTE_UNSUPPORTED' }
5252
);
5353

5454
await rejects(
Collapse file

‎test/es-module/test-esm-import-attributes-errors.mjs‎

Copy file name to clipboardExpand all lines: test/es-module/test-esm-import-attributes-errors.mjs
+2-2Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -23,7 +23,7 @@ await rejects(
2323

2424
await rejects(
2525
import(jsModuleDataUrl, { with: { type: 'json', other: 'unsupported' } }),
26-
{ code: 'ERR_IMPORT_ATTRIBUTE_TYPE_INCOMPATIBLE' }
26+
{ code: 'ERR_IMPORT_ATTRIBUTE_UNSUPPORTED' }
2727
);
2828

2929
await rejects(
@@ -43,7 +43,7 @@ await rejects(
4343

4444
await rejects(
4545
import(jsonModuleDataUrl, { with: { foo: 'bar' } }),
46-
{ code: 'ERR_IMPORT_ATTRIBUTE_MISSING' }
46+
{ code: 'ERR_IMPORT_ATTRIBUTE_UNSUPPORTED' }
4747
);
4848

4949
await rejects(

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