66 lines
1.6 KiB
JavaScript
66 lines
1.6 KiB
JavaScript
const chalk = require("chalk");
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const shelljs = require("shelljs");
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const chokidar = require("chokidar");
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function debounce(func, wait, immediate) {
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let timeout;
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function debounced(...args) {
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const ctx = this;
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if (timeout) clearTimeout(timeout);
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if (immediate) {
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const callNow = !timeout;
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timeout = setTimeout(() => {
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// 这里只有在 wait 时长之后，timeout 为 null，然后触发防抖函数才能立即执行，
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// 否则 callNow 为 false，不会立即执行，计时器会重新计时
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timeout = null;
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}, wait);
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if (callNow) func.apply(ctx, args);
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} else {
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timeout = setTimeout(() => {
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func.apply(ctx, args);
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}, wait);
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}
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}
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debounced.cancel = function cancel() {
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clearTimeout(timeout);
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timeout = null;
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};
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return debounced;
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}
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function build() {
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console.log();
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console.log(chalk.green("-> building"));
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shelljs.exec("cross-env NODE_ENV=production && npx babel src --out-dir lib --copy-files");
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console.log(chalk.green("-> build finished"));
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}
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const dBuild = debounce(build, 1000);
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function setupWatch() {
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const watcher = chokidar.watch("./src", {
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ignoreInitial: true,
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});
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watcher.on("change", dBuild);
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watcher.on("add", dBuild);
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watcher.on("ready", () => {
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dBuild();
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});
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process.on("SIGINT", function() {
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watcher.close();
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process.exit(0);
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});
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watcher.on("error", (error) => {
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console.error("Watcher failure", error);
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process.exit(1);
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});
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}
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console.log(chalk.green("rebuild while code under src/ changed"));
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setupWatch();
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