tsc-path-fix
Version:
Zero-runtime TypeScript path resolver - converts aliases to relative paths at compile time. Fast, lightweight, with native watch mode.
227 lines • 11.2 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __asyncValues = (this && this.__asyncValues) || function (o) {
if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
var m = o[Symbol.asyncIterator], i;
return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.clearFileContentCache = clearFileContentCache;
exports.importReplacers = importReplacers;
exports.replaceAlias = replaceAlias;
exports.replaceAliasString = replaceAliasString;
const fs_1 = require("fs");
const mylas_1 = require("mylas");
const path_1 = require("path");
const utils_1 = require("../utils");
const stream_utils_1 = require("../utils/stream-utils");
const import_path_resolver_1 = require("../utils/import-path-resolver");
const normalizePath = require("normalize-path");
const quickFilterRegex = /import|require|from/;
const fileContentCache = new Map();
const MAX_CACHE_SIZE = 1000;
const STREAMING_THRESHOLD = 1024 * 1024;
function clearFileContentCache() {
fileContentCache.clear();
}
function importReplacers(config, replacers, cmdReplacers) {
return __awaiter(this, void 0, void 0, function* () {
var _a, e_1, _b, _c;
var _d;
config.output.debug('Started loading replacers');
const dir = process.cwd();
const node_modules = mylas_1.Dir.nodeModules({ cwd: dir });
config.output.debug('Found node_modules:', node_modules);
const defaultReplacers = {
default: {
enabled: true
},
'base-url': {
enabled: !!config.baseUrl
}
};
let merged = Object.assign(Object.assign({}, defaultReplacers), replacers);
config.output.debug('Added replacers to list from command-line filepaths:', cmdReplacers);
cmdReplacers === null || cmdReplacers === void 0 ? void 0 : cmdReplacers.forEach((v) => {
merged[v] = {
enabled: true,
file: v
};
});
config.output.debug('Reading replacers config');
const entries = Object.entries(merged);
try {
for (var _e = true, entries_1 = __asyncValues(entries), entries_1_1; entries_1_1 = yield entries_1.next(), _a = entries_1_1.done, !_a; _e = true) {
_c = entries_1_1.value;
_e = false;
const replacer = _c;
if (replacer[1].enabled) {
if (Object.keys(defaultReplacers).includes(replacer[0])) {
config.output.debug('Loading default replacer:', replacer);
const replacerModule = yield Promise.resolve(`${`../replacers/${replacer[0]}.replacer`}`).then(s => require(s));
config.replacers.push(replacerModule.default);
}
const file = (_d = replacer[1]) === null || _d === void 0 ? void 0 : _d.file;
if (!file) {
config.output.debug('Replacer has no file:', replacer);
continue;
}
const tryImportReplacer = (targetPath) => __awaiter(this, void 0, void 0, function* () {
const replacerModule = yield Promise.resolve(`${targetPath}`).then(s => require(s));
config.output.debug('Imported replacerModule:', replacerModule);
const replacerFunction = replacerModule.default;
if (typeof replacerFunction == 'function') {
config.replacers.push(replacerFunction);
config.output.info(`Added replacer "${file}"`);
}
else {
config.output.error(`Failed to import replacer "${file}", not in replacer format.`);
}
});
const isRelativePath = !(0, path_1.isAbsolute)(file);
const path = isRelativePath ? normalizePath((0, path_1.join)(dir, file)) : file;
if ((0, fs_1.existsSync)(path)) {
try {
yield tryImportReplacer(path);
config.output.debug('Imported replacer:', path);
continue;
}
catch (_f) { }
}
if (isRelativePath) {
for (const targetPath of node_modules.map((v) => (0, path_1.join)(dir, v, file))) {
try {
yield tryImportReplacer(targetPath);
config.output.debug('Imported replacer:', targetPath);
continue;
}
catch (_g) { }
}
}
config.output.error(`Failed to import replacer "${file}"`);
}
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (!_e && !_a && (_b = entries_1.return)) yield _b.call(entries_1);
}
finally { if (e_1) throw e_1.error; }
}
config.output.debug('Loaded replacers:', config.replacers);
});
}
function replaceAlias(config, file, resolveFullPath, resolveFullExtension) {
return __awaiter(this, void 0, void 0, function* () {
config.output.debug('Starting to replace file:', file);
const hasImports = yield (0, stream_utils_1.fileContainsPattern)(file, quickFilterRegex);
if (!hasImports) {
config.output.debug('File has no import/require statements, skipping:', file);
return false;
}
const stats = yield fs_1.promises.stat(file).catch(() => null);
if (!stats) {
config.output.debug('File not found or cannot be accessed:', file);
return false;
}
if (stats.size >= STREAMING_THRESHOLD) {
config.output.debug('Using streaming for large file:', file);
const needsProcessing = yield (0, stream_utils_1.fileContainsPattern)(file, (0, import_path_resolver_1.newImportStatementRegex)());
if (!needsProcessing) {
config.output.debug('Large file has no import statements to process, skipping:', file);
return false;
}
let wasModified = false;
yield (0, stream_utils_1.streamProcessFile)(file, (content) => {
const transformed = replaceAliasString(config, file, content, resolveFullPath, resolveFullExtension);
if (transformed !== content) {
wasModified = true;
}
return transformed;
});
if (wasModified) {
config.output.debug('Replaced file with changes using streaming approach:', file);
}
return wasModified;
}
let code;
const cached = fileContentCache.get(file);
if (cached && cached.mtime === stats.mtime.getTime()) {
code = cached.content;
config.output.debug('Using cached file content:', file);
}
else {
code = yield fs_1.promises.readFile(file, 'utf8');
if (fileContentCache.size >= MAX_CACHE_SIZE) {
const keysToDelete = Array.from(fileContentCache.keys()).slice(0, Math.floor(MAX_CACHE_SIZE * 0.2));
keysToDelete.forEach(key => fileContentCache.delete(key));
config.output.debug('Evicted entries from file cache, new size:', fileContentCache.size);
}
fileContentCache.set(file, {
mtime: stats.mtime.getTime(),
content: code
});
}
const tempCode = replaceAliasString(config, file, code, resolveFullPath, resolveFullExtension);
if (code !== tempCode) {
config.output.debug('replaced file with changes:', file);
yield fs_1.promises.writeFile(file, tempCode, 'utf8');
const newStats = yield fs_1.promises.stat(file).catch(() => null);
if (newStats) {
fileContentCache.set(file, {
mtime: newStats.mtime.getTime(),
content: tempCode
});
}
return true;
}
config.output.debug('replaced file without changes:', file);
return false;
});
}
function replaceAliasString(config, file, code, resolveFullPath, resolveFullExtension) {
let previousCode = '';
let currentCode = code;
let iterationCount = 0;
const MAX_ITERATIONS = 5;
while (previousCode !== currentCode && iterationCount < MAX_ITERATIONS) {
previousCode = currentCode;
iterationCount++;
config.output.debug(`Alias resolution pass #${iterationCount} for ${file}`);
if (iterationCount > 1) {
const { clearPathResolutionCache } = require('../utils/import-path-resolver');
const { clearTrieCache } = require('../utils/trie');
clearPathResolutionCache();
clearTrieCache();
if (config.pathCache && typeof config.pathCache.clearCache === 'function') {
config.pathCache.clearCache();
}
}
config.replacers.forEach((replacer) => {
currentCode = (0, utils_1.replaceSourceImportPaths)(currentCode, file, (orig) => replacer({
orig,
file,
config
}));
});
}
if (iterationCount > 1) {
config.output.debug(`Completed ${iterationCount} passes for full alias resolution in ${file}`);
}
if (resolveFullPath) {
currentCode = (0, utils_1.resolveFullImportPaths)(currentCode, file, resolveFullExtension);
}
return currentCode;
}
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