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PR-URL: #43967 Reviewed-By: Jacob Smith <jacob@frende.me> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| 'use strict'; | ||
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| const { | ||
| JSONParse, | ||
| SafeMap, | ||
| StringPrototypeEndsWith, | ||
| } = primordials; | ||
| const { URL, fileURLToPath } = require('internal/url'); | ||
| const { | ||
| ERR_INVALID_PACKAGE_CONFIG, | ||
| } = require('internal/errors').codes; | ||
|
|
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| const packageJsonReader = require('internal/modules/package_json_reader'); | ||
|
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|
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| /** | ||
| * @typedef {string | string[] | Record<string, unknown>} Exports | ||
| * @typedef {'module' | 'commonjs'} PackageType | ||
| * @typedef {{ | ||
| * pjsonPath: string, | ||
| * exports?: ExportConfig, | ||
| * name?: string, | ||
| * main?: string, | ||
| * type?: PackageType, | ||
| * }} PackageConfig | ||
| */ | ||
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| /** @type {Map<string, PackageConfig>} */ | ||
| const packageJSONCache = new SafeMap(); | ||
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| /** | ||
| * @param {string} path | ||
| * @param {string} specifier | ||
| * @param {string | URL | undefined} base | ||
| * @returns {PackageConfig} | ||
| */ | ||
| function getPackageConfig(path, specifier, base) { | ||
| const existing = packageJSONCache.get(path); | ||
| if (existing !== undefined) { | ||
| return existing; | ||
| } | ||
| const source = packageJsonReader.read(path).string; | ||
| if (source === undefined) { | ||
| const packageConfig = { | ||
| pjsonPath: path, | ||
| exists: false, | ||
| main: undefined, | ||
| name: undefined, | ||
| type: 'none', | ||
| exports: undefined, | ||
| imports: undefined, | ||
| }; | ||
| packageJSONCache.set(path, packageConfig); | ||
| return packageConfig; | ||
| } | ||
|
|
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| let packageJSON; | ||
| try { | ||
| packageJSON = JSONParse(source); | ||
| } catch (error) { | ||
| throw new ERR_INVALID_PACKAGE_CONFIG( | ||
| path, | ||
| (base ? `"${specifier}" from ` : '') + fileURLToPath(base || specifier), | ||
| error.message | ||
| ); | ||
| } | ||
|
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| let { imports, main, name, type } = packageJSON; | ||
| const { exports } = packageJSON; | ||
| if (typeof imports !== 'object' || imports === null) { | ||
| imports = undefined; | ||
| } | ||
| if (typeof main !== 'string') { | ||
| main = undefined; | ||
| } | ||
| if (typeof name !== 'string') { | ||
| name = undefined; | ||
| } | ||
| // Ignore unknown types for forwards compatibility | ||
| if (type !== 'module' && type !== 'commonjs') { | ||
| type = 'none'; | ||
| } | ||
|
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| const packageConfig = { | ||
| pjsonPath: path, | ||
| exists: true, | ||
| main, | ||
| name, | ||
| type, | ||
| exports, | ||
| imports, | ||
| }; | ||
| packageJSONCache.set(path, packageConfig); | ||
| return packageConfig; | ||
| } | ||
|
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|
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| /** | ||
| * @param {URL | string} resolved | ||
| * @returns {PackageConfig} | ||
| */ | ||
| function getPackageScopeConfig(resolved) { | ||
| let packageJSONUrl = new URL('./package.json', resolved); | ||
| while (true) { | ||
| const packageJSONPath = packageJSONUrl.pathname; | ||
| if (StringPrototypeEndsWith(packageJSONPath, 'node_modules/package.json')) { | ||
| break; | ||
| } | ||
| const packageConfig = getPackageConfig(fileURLToPath(packageJSONUrl), resolved); | ||
| if (packageConfig.exists) { | ||
| return packageConfig; | ||
| } | ||
|
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| const lastPackageJSONUrl = packageJSONUrl; | ||
| packageJSONUrl = new URL('../package.json', packageJSONUrl); | ||
|
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| // Terminates at root where ../package.json equals ../../package.json | ||
| // (can't just check "/package.json" for Windows support). | ||
| if (packageJSONUrl.pathname === lastPackageJSONUrl.pathname) { | ||
| break; | ||
| } | ||
| } | ||
| const packageJSONPath = fileURLToPath(packageJSONUrl); | ||
| const packageConfig = { | ||
| pjsonPath: packageJSONPath, | ||
| exists: false, | ||
| main: undefined, | ||
| name: undefined, | ||
| type: 'none', | ||
| exports: undefined, | ||
| imports: undefined, | ||
| }; | ||
| packageJSONCache.set(packageJSONPath, packageConfig); | ||
| return packageConfig; | ||
| } | ||
|
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| module.exports = { | ||
| getPackageConfig, | ||
| getPackageScopeConfig, | ||
| }; |
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