mirror of https://github.com/webpack/webpack.git
91 lines
2.3 KiB
JavaScript
91 lines
2.3 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const { join, dirname, readJson } = require("../util/fs");
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/** @typedef {import("../util/fs").InputFileSystem} InputFileSystem */
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/**
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* @param {string} str maybe required version
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* @returns {boolean} true, if it looks like a version
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*/
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exports.isRequiredVersion = str => {
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return /^([\d^=v<>~]|[*xX]$)/.test(str);
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};
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/**
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*
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* @param {InputFileSystem} fs file system
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* @param {string} directory directory to start looking into
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* @param {string[]} descriptionFiles possible description filenames
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* @param {function(Error=, {data: object, path: string}=): void} callback callback
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*/
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const getDescriptionFile = (fs, directory, descriptionFiles, callback) => {
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let i = 0;
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const tryLoadCurrent = () => {
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if (i >= descriptionFiles.length) {
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const parentDirectory = dirname(fs, directory);
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if (!parentDirectory || parentDirectory === directory) return callback();
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return getDescriptionFile(
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fs,
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parentDirectory,
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descriptionFiles,
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callback
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);
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}
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const filePath = join(fs, directory, descriptionFiles[i]);
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readJson(fs, filePath, (err, data) => {
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if (err) {
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if ("code" in err && err.code === "ENOENT") {
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i++;
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return tryLoadCurrent();
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}
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return callback(err);
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}
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if (!data || typeof data !== "object" || Array.isArray(data)) {
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return callback(
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new Error(`Description file ${filePath} is not an object`)
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);
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}
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callback(null, { data, path: filePath });
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});
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};
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tryLoadCurrent();
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};
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exports.getDescriptionFile = getDescriptionFile;
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exports.getRequiredVersionFromDescriptionFile = (data, packageName) => {
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if (
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data.optionalDependencies &&
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typeof data.optionalDependencies === "object" &&
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packageName in data.optionalDependencies
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) {
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return data.optionalDependencies[packageName];
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}
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if (
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data.dependencies &&
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typeof data.dependencies === "object" &&
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packageName in data.dependencies
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) {
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return data.dependencies[packageName];
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}
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if (
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data.peerDependencies &&
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typeof data.peerDependencies === "object" &&
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packageName in data.peerDependencies
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) {
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return data.peerDependencies[packageName];
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}
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if (
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data.devDependencies &&
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typeof data.devDependencies === "object" &&
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packageName in data.devDependencies
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) {
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return data.devDependencies[packageName];
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}
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};
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