119 lines
3 KiB
JavaScript
119 lines
3 KiB
JavaScript
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'use strict';
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const path = require('path');
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const os = require('os');
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const fs = require('fs');
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const ini = require('ini');
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const isWindows = process.platform === 'win32';
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const readRc = filePath => {
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try {
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return ini.parse(fs.readFileSync(filePath, 'utf8')).prefix;
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} catch (_) {}
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};
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const getEnvNpmPrefix = () => {
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return Object.keys(process.env).reduce((prefix, name) => {
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return (/^npm_config_prefix$/i).test(name) ? process.env[name] : prefix;
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}, undefined);
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};
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const getGlobalNpmrc = () => {
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if (isWindows && process.env.APPDATA) {
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// Hardcoded contents of `c:\Program Files\nodejs\node_modules\npm\npmrc`
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return path.join(process.env.APPDATA, '/npm/etc/npmrc');
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}
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// Homebrew special case: `$(brew --prefix)/lib/node_modules/npm/npmrc`
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if (process.execPath.includes('/Cellar/node')) {
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const homebrewPrefix = process.execPath.slice(0, process.execPath.indexOf('/Cellar/node'));
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return path.join(homebrewPrefix, '/lib/node_modules/npm/npmrc');
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}
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if (process.execPath.endsWith('/bin/node')) {
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const installDir = path.dirname(path.dirname(process.execPath));
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return path.join(installDir, '/etc/npmrc');
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}
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};
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const getDefaultNpmPrefix = () => {
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if (isWindows) {
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// `c:\node\node.exe` → `prefix=c:\node\`
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return path.dirname(process.execPath);
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}
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// `/usr/local/bin/node` → `prefix=/usr/local`
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return path.dirname(path.dirname(process.execPath));
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};
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const getNpmPrefix = () => {
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const envPrefix = getEnvNpmPrefix();
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if (envPrefix) {
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return envPrefix;
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}
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const homePrefix = readRc(path.join(os.homedir(), '.npmrc'));
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if (homePrefix) {
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return homePrefix;
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}
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if (process.env.PREFIX) {
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return process.env.PREFIX;
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}
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const globalPrefix = readRc(getGlobalNpmrc());
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if (globalPrefix) {
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return globalPrefix;
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}
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return getDefaultNpmPrefix();
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};
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const npmPrefix = path.resolve(getNpmPrefix());
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const getYarnWindowsDirectory = () => {
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if (isWindows && process.env.LOCALAPPDATA) {
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const dir = path.join(process.env.LOCALAPPDATA, 'Yarn');
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if (fs.existsSync(dir)) {
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return dir;
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}
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}
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return false;
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};
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const getYarnPrefix = () => {
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if (process.env.PREFIX) {
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return process.env.PREFIX;
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}
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const windowsPrefix = getYarnWindowsDirectory();
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if (windowsPrefix) {
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return windowsPrefix;
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}
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const configPrefix = path.join(os.homedir(), '.config/yarn');
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if (fs.existsSync(configPrefix)) {
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return configPrefix;
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}
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const homePrefix = path.join(os.homedir(), '.yarn-config');
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if (fs.existsSync(homePrefix)) {
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return homePrefix;
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}
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// Yarn supports the npm conventions but the inverse is not true
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return npmPrefix;
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};
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exports.npm = {};
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exports.npm.prefix = npmPrefix;
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exports.npm.packages = path.join(npmPrefix, isWindows ? 'node_modules' : 'lib/node_modules');
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exports.npm.binaries = isWindows ? npmPrefix : path.join(npmPrefix, 'bin');
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const yarnPrefix = path.resolve(getYarnPrefix());
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exports.yarn = {};
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exports.yarn.prefix = yarnPrefix;
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exports.yarn.packages = path.join(yarnPrefix, getYarnWindowsDirectory() ? 'Data/global/node_modules' : 'global/node_modules');
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exports.yarn.binaries = path.join(exports.yarn.packages, '.bin');
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