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modules: move callbacks and conditions into modules/esm/utils.js
This moves the following utils into modules/esm/utils.js: - Code related to default conditions - The callbackMap (which is now created in the module instead of hanging off the module_wrap binding, since the C++ land does not need it). - Per-isolate module callbacks These are self-contained code that can be included into the built-in snapshot. PR-URL: #45849 Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com> Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| 'use strict'; | ||
| const { | ||
| ArrayIsArray, | ||
| SafeSet, | ||
| SafeWeakMap, | ||
| ObjectFreeze, | ||
| } = primordials; | ||
|
|
||
| const { | ||
| ERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING, | ||
| ERR_INVALID_ARG_VALUE, | ||
| } = require('internal/errors').codes; | ||
|
|
||
| const { getOptionValue } = require('internal/options'); | ||
|
|
||
| const { | ||
| setImportModuleDynamicallyCallback, | ||
| setInitializeImportMetaObjectCallback | ||
| } = internalBinding('module_wrap'); | ||
| const { | ||
| getModuleFromWrap, | ||
| } = require('internal/vm/module'); | ||
| const assert = require('internal/assert'); | ||
|
|
||
| const callbackMap = new SafeWeakMap(); | ||
| function setCallbackForWrap(wrap, data) { | ||
| callbackMap.set(wrap, data); | ||
| } | ||
|
|
||
| let defaultConditions; | ||
| function getDefaultConditions() { | ||
| assert(defaultConditions !== undefined); | ||
| return defaultConditions; | ||
| } | ||
|
|
||
| let defaultConditionsSet; | ||
| function getDefaultConditionsSet() { | ||
| assert(defaultConditionsSet !== undefined); | ||
| return defaultConditionsSet; | ||
| } | ||
|
|
||
| // This function is called during pre-execution, before any user code is run. | ||
| function initializeDefaultConditions() { | ||
| const userConditions = getOptionValue('--conditions'); | ||
| const noAddons = getOptionValue('--no-addons'); | ||
| const addonConditions = noAddons ? [] : ['node-addons']; | ||
|
|
||
| defaultConditions = ObjectFreeze([ | ||
| 'node', | ||
| 'import', | ||
| ...addonConditions, | ||
| ...userConditions, | ||
| ]); | ||
| defaultConditionsSet = new SafeSet(defaultConditions); | ||
| } | ||
|
|
||
| /** | ||
| * @param {string[]} [conditions] | ||
| * @returns {Set<string>} | ||
| */ | ||
| function getConditionsSet(conditions) { | ||
| if (conditions !== undefined && conditions !== getDefaultConditions()) { | ||
| if (!ArrayIsArray(conditions)) { | ||
| throw new ERR_INVALID_ARG_VALUE('conditions', conditions, | ||
| 'expected an array'); | ||
| } | ||
| return new SafeSet(conditions); | ||
| } | ||
| return getDefaultConditionsSet(); | ||
| } | ||
|
|
||
| function initializeImportMetaObject(wrap, meta) { | ||
| if (callbackMap.has(wrap)) { | ||
| const { initializeImportMeta } = callbackMap.get(wrap); | ||
| if (initializeImportMeta !== undefined) { | ||
| initializeImportMeta(meta, getModuleFromWrap(wrap) || wrap); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| async function importModuleDynamicallyCallback(wrap, specifier, assertions) { | ||
| if (callbackMap.has(wrap)) { | ||
| const { importModuleDynamically } = callbackMap.get(wrap); | ||
| if (importModuleDynamically !== undefined) { | ||
| return importModuleDynamically( | ||
| specifier, getModuleFromWrap(wrap) || wrap, assertions); | ||
| } | ||
| } | ||
| throw new ERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING(); | ||
| } | ||
|
|
||
| function initializeESM() { | ||
| initializeDefaultConditions(); | ||
| // Setup per-isolate callbacks that locate data or callbacks that we keep | ||
| // track of for different ESM modules. | ||
| setInitializeImportMetaObjectCallback(initializeImportMetaObject); | ||
| setImportModuleDynamicallyCallback(importModuleDynamicallyCallback); | ||
| } | ||
|
|
||
| module.exports = { | ||
| setCallbackForWrap, | ||
| initializeESM, | ||
| getDefaultConditions, | ||
| getConditionsSet, | ||
| }; |
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