71 lines
2.1 KiB
Plaintext
71 lines
2.1 KiB
Plaintext
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import path from 'node:path';
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import { isInNodeModules, loadTS, native2posix } from './util.js';
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/**
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* find the closest tsconfig.json file using native ts.findConfigFile
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*
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* You must have `typescript` installed to use this
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*
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* @param {string} filename - path to file to find tsconfig for (absolute or relative to cwd)
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* @param {import('./public.d.ts').TSConfckFindOptions} [options] - options
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* @returns {Promise<string>} absolute path to closest tsconfig.json
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*/
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export async function findNative(filename, options) {
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let dir = native2posix(path.dirname(path.resolve(filename)));
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if (options?.ignoreNodeModules && isInNodeModules(dir)) {
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return null;
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}
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const cache = options?.cache;
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const root = options?.root ? native2posix(path.resolve(options.root)) : undefined;
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const configName = options?.configName ?? 'tsconfig.json';
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if (cache?.hasConfigPath(dir, configName)) {
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return cache.getConfigPath(dir, configName);
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}
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const ts = await loadTS();
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const { findConfigFile, sys } = ts;
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let tsconfigFile = findConfigFile(dir, sys.fileExists, configName);
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if (!tsconfigFile || is_out_of_root(tsconfigFile, root)) {
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tsconfigFile = null;
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}
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if (cache) {
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cache_result(tsconfigFile, dir, cache, root, configName);
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}
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return tsconfigFile;
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}
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/**
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*
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* @param {string} tsconfigFile
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* @param {string} root
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*/
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function is_out_of_root(tsconfigFile, root) {
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return root && !tsconfigFile.startsWith(root);
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}
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/**
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* add all intermediate directories between fileDir and tsconfigFile to cache
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* if no tsconfig was found, go up until root
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* @param {string|null} tsconfigFile
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* @param {string} fileDir
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* @param {import('./cache.js').TSConfckCache} cache
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* @param {string|undefined} root
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* @param {string} configName
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*/
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function cache_result(tsconfigFile, fileDir, cache, root, configName) {
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const tsconfigDir = tsconfigFile ? path.dirname(tsconfigFile) : root;
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const directories = [];
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let dir = fileDir;
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while (dir) {
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directories.push(dir);
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const parent = path.dirname(dir);
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if (tsconfigDir === dir || parent === dir) {
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break;
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} else {
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dir = parent;
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}
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}
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directories.forEach((d) => {
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cache.setConfigPath(d, Promise.resolve(tsconfigFile), configName);
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});
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}
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