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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 |
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'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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/** | ||
* @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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/** | ||
* @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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