67 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			67 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
import process from 'node:process';
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import path from 'node:path';
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import fs from 'node:fs';
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import commonPathPrefix from 'common-path-prefix';
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import {packageDirectorySync} from 'pkg-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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		fs.mkdirSync(directory, {recursive: true});
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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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export default function findCacheDirectory(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 = commonPathPrefix(options.files.map(file => path.resolve(directory, file)));
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	}
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	directory = packageDirectorySync({cwd: 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;
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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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