@gati-framework/cli/dist/utils/watcher.js

CLI tool for Gati framework - create, develop, build and deploy cloud-native applications

/**
 * @module cli/utils/watcher
 * @description File watching utility for hot reload in development
 */
import chokidar, {} from 'chokidar';
import { resolve } from 'path';
import chalk from 'chalk';
/**
 * Create a file watcher for development hot reload
 */
export function createWatcher(cwd, options, onChange) {
    const { paths, ignored = ['**/node_modules/**', '**/dist/**', '**/.git/**', '**/coverage/**'], verbose = false, debounce = 300, } = options;
    if (verbose) {
        // eslint-disable-next-line no-console
        console.log(chalk.blue(`👁 Watching for file changes in:`));
        paths.forEach((p) => {
            // eslint-disable-next-line no-console
            console.log(chalk.gray(`   - ${resolve(cwd, p)}`));
        });
    }
    // Create watcher - use cwd and relative paths
    const watcher = chokidar.watch(paths, {
        cwd, // Set base directory
        ignored,
        persistent: true,
        ignoreInitial: true,
        awaitWriteFinish: {
            stabilityThreshold: debounce,
            pollInterval: 100,
        },
    });
    // Debounce helper
    let debounceTimer = null;
    const debouncedOnChange = (path, event) => {
        if (debounceTimer) {
            clearTimeout(debounceTimer);
        }
        debounceTimer = setTimeout(() => {
            void (async () => {
                try {
                    await onChange(path, event);
                }
                catch (error) {
                    // eslint-disable-next-line no-console
                    console.error(chalk.red(`✖ Error handling file change: ${error instanceof Error ? error.message : 'Unknown error'}`));
                }
            })();
        }, debounce);
    };
    // Register event handlers
    watcher
        .on('add', (path) => {
        if (verbose) {
            // eslint-disable-next-line no-console
            console.log(chalk.green(`➕ File added: ${path}`));
        }
        debouncedOnChange(path, 'add');
    })
        .on('change', (path) => {
        if (verbose) {
            // eslint-disable-next-line no-console
            console.log(chalk.yellow(`📝 File changed: ${path}`));
        }
        debouncedOnChange(path, 'change');
    })
        .on('unlink', (path) => {
        if (verbose) {
            // eslint-disable-next-line no-console
            console.log(chalk.red(`🗑 File removed: ${path}`));
        }
        debouncedOnChange(path, 'unlink');
    })
        .on('error', (error) => {
        // eslint-disable-next-line no-console
        console.error(chalk.red(`✖ Watcher error: ${error instanceof Error ? error.message : 'Unknown error'}`));
    });
    return watcher;
}
/**
 * Stop a file watcher
 */
export async function stopWatcher(watcher) {
    await watcher.close();
}
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