4e5f25206a
This ensures we correctly wait for `component-index.js.tmp` to be written to disk before trying to rename into place. This fixes an issue where stray temp files were being strewn about the repos after renaming failures.
91 lines
2.9 KiB
JavaScript
Executable file
91 lines
2.9 KiB
JavaScript
Executable file
#!/usr/bin/env node
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const fs = require('fs');
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const path = require('path');
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const glob = require('glob');
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const util = require('util');
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const args = require('minimist')(process.argv);
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const chokidar = require('chokidar');
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const componentIndex = path.join('src', 'component-index.js');
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const componentIndexTmp = componentIndex+".tmp";
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const componentsDir = path.join('src', 'components');
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const componentJsGlob = '**/*.js';
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const componentTsGlob = '**/*.tsx';
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let prevFiles = [];
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async function reskindex() {
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const jsFiles = glob.sync(componentJsGlob, {cwd: componentsDir}).sort();
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const tsFiles = glob.sync(componentTsGlob, {cwd: componentsDir}).sort();
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const files = [...tsFiles, ...jsFiles];
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if (!filesHaveChanged(files, prevFiles)) {
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return;
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}
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prevFiles = files;
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const header = args.h || args.header;
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const strm = fs.createWriteStream(componentIndexTmp);
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if (header) {
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strm.write(fs.readFileSync(header));
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strm.write('\n');
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}
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strm.write("/*\n");
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strm.write(" * THIS FILE IS AUTO-GENERATED\n");
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strm.write(" * You can edit it you like, but your changes will be overwritten,\n");
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strm.write(" * so you'd just be trying to swim upstream like a salmon.\n");
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strm.write(" * You are not a salmon.\n");
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strm.write(" */\n\n");
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strm.write("let components = {};\n");
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for (let i = 0; i < files.length; ++i) {
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const file = files[i].replace('.js', '').replace('.tsx', '');
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const moduleName = (file.replace(/\//g, '.'));
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const importName = moduleName.replace(/\./g, "$");
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strm.write("import " + importName + " from './components/" + file + "';\n");
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strm.write(importName + " && (components['"+moduleName+"'] = " + importName + ");");
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strm.write('\n');
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strm.uncork();
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}
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strm.write("export {components};\n");
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// Ensure the file has been fully written to disk before proceeding
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await util.promisify(strm.end);
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fs.rename(componentIndexTmp, componentIndex, function(err) {
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if (err) {
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console.error("Error moving new index into place: " + err);
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} else {
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console.log('Reskindex: completed');
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}
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});
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}
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// Expects both arrays of file names to be sorted
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function filesHaveChanged(files, prevFiles) {
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if (files.length !== prevFiles.length) {
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return true;
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}
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// Check for name changes
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for (const i = 0; i < files.length; i++) {
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if (prevFiles[i] !== files[i]) {
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return true;
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}
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}
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return false;
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}
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// -w indicates watch mode where any FS events will trigger reskindex
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if (!args.w) {
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reskindex();
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return;
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}
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let watchDebouncer = null;
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chokidar.watch(path.join(componentsDir, componentJsGlob)).on('all', (event, path) => {
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if (path === componentIndex) return;
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if (watchDebouncer) clearTimeout(watchDebouncer);
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watchDebouncer = setTimeout(reskindex, 1000);
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});
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