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* Start on watch command. * Use debounce. * Update types. * Add docs.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| import { applyStyle, Arg, Command, Config, GlobalOptions } from '@boost/cli'; | ||
| import { Bind, formatMs } from '@boost/common'; | ||
| import chokidar from 'chokidar'; | ||
| import Package from '../Package'; | ||
| import Packemon from '../Packemon'; | ||
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| @Config('watch', 'Watch local files for changes and rebuild') | ||
| export class WatchCommand extends Command<GlobalOptions> { | ||
| @Arg.Number('Number of milliseconds to wait after a change before triggering a rebuild') | ||
| debounce: number = 150; | ||
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| @Arg.Flag('Poll for file changes instead of using file system events') | ||
| poll: boolean = false; | ||
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| protected packemon!: Packemon; | ||
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| protected packagesToRebuild = new Set<Package>(); | ||
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| protected rebuilding: boolean = false; | ||
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| protected rebuildTimer?: NodeJS.Timeout; | ||
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| async run() { | ||
| const packemon = new Packemon(); | ||
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| this.packemon = packemon; | ||
| packemon.debug('Starting `watch` process'); | ||
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| // Generate all our build artifacts | ||
| await packemon.findPackages(); | ||
| await packemon.generateArtifacts(); | ||
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| // Instantiate the watcher for each package source | ||
| const watchPaths = packemon.packages.map((pkg) => pkg.path.append('src/**/*').path()); | ||
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| packemon.debug('Initializing chokidar watcher for paths:'); | ||
| packemon.debug(watchPaths.map((path) => ` - ${path}`).join('\n')); | ||
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| const watcher = chokidar.watch(watchPaths, { | ||
| ignored: /(^|[/\\])\../u, // dotfiles | ||
| ignoreInitial: true, | ||
| persistent: true, | ||
| usePolling: this.poll, | ||
| }); | ||
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| // Rebuild when files change | ||
| watcher.on('all', this.enqueueRebuild); | ||
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| this.log('Watching for changes...'); | ||
| } | ||
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| enqueueRebuild = (event: string, path: string) => { | ||
| if (event !== 'add' && event !== 'change' && event !== 'unlink') { | ||
| return; | ||
| } | ||
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| this.log(applyStyle(' - %s', 'muted'), path.replace(`${this.packemon.root.path()}/`, '')); | ||
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| const changedPkg = this.packemon.packages.find((pkg) => path.startsWith(pkg.path.path())); | ||
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| if (changedPkg) { | ||
| this.packagesToRebuild.add(changedPkg); | ||
| this.triggerRebuilds(); | ||
| } | ||
| }; | ||
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| triggerRebuilds() { | ||
| if (this.rebuildTimer) { | ||
| clearTimeout(this.rebuildTimer); | ||
| } | ||
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| this.rebuildTimer = setTimeout(() => { | ||
| void this.rebuildPackages(); | ||
| }, this.debounce); | ||
| } | ||
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| @Bind() | ||
| async rebuildPackages() { | ||
| if (this.rebuilding) { | ||
| this.triggerRebuilds(); | ||
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| return; | ||
| } | ||
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| const pkgs = Array.from(this.packagesToRebuild); | ||
| const pkgNames = pkgs.map((pkg) => pkg.getName()); | ||
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| if (pkgs.length === 0) { | ||
| return; | ||
| } | ||
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| this.packagesToRebuild.clear(); | ||
| this.rebuilding = true; | ||
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| try { | ||
| const start = Date.now(); | ||
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| await Promise.all(pkgs.map((pkg) => pkg.build({}))); | ||
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| this.log( | ||
| applyStyle('Built %s in %s', 'success'), | ||
| pkgNames.join(', '), | ||
| formatMs(Date.now() - start), | ||
| ); | ||
| } catch (error) { | ||
| this.log.error(error.message); | ||
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| this.log(applyStyle('Failed to build %s', 'failure'), pkgNames.join(', ')); | ||
| } finally { | ||
| this.rebuilding = false; | ||
| } | ||
| } | ||
| } |
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