68 lines
1.4 KiB
JavaScript
68 lines
1.4 KiB
JavaScript
'use strict';
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const path = require('path');
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const fs = require('fs');
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const commonDir = require('commondir');
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const pkgDir = require('pkg-dir');
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const makeDir = require('make-dir');
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const {env, cwd} = process;
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const isWritable = path => {
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try {
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fs.accessSync(path, fs.constants.W_OK);
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return true;
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} catch (_) {
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return false;
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}
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};
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function useDirectory(directory, options) {
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if (options.create) {
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makeDir.sync(directory);
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}
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if (options.thunk) {
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return (...arguments_) => path.join(directory, ...arguments_);
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}
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return directory;
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}
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function getNodeModuleDirectory(directory) {
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const nodeModules = path.join(directory, 'node_modules');
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if (
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!isWritable(nodeModules) &&
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(fs.existsSync(nodeModules) || !isWritable(path.join(directory)))
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) {
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return;
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}
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return nodeModules;
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}
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module.exports = (options = {}) => {
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if (env.CACHE_DIR && !['true', 'false', '1', '0'].includes(env.CACHE_DIR)) {
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return useDirectory(path.join(env.CACHE_DIR, options.name), options);
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}
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let {cwd: directory = cwd()} = options;
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if (options.files) {
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directory = commonDir(directory, options.files);
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}
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directory = pkgDir.sync(directory);
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if (!directory) {
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return;
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}
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const nodeModules = getNodeModuleDirectory(directory);
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if (!nodeModules) {
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return undefined;
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}
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return useDirectory(path.join(directory, 'node_modules', '.cache', options.name), options);
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};
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