astexplorer.app/dist/main/file-watcher.js

https://astexplorer.net with ES Modules support and Hot Reloading

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
exports.__esModule = true;
exports.createFileWatcher = void 0;
var chokidar_1 = __importDefault(require("chokidar"));
var createFileWatcher = function (onChange) {
    var filePath = '';
    var watcher = null;
    var hasFilePath = function () { return filePath !== ''; };
    var isNewPath = function (nextFilePath) { return nextFilePath !== filePath; };
    var isRunning = function () { return watcher !== null; };
    var start = function () {
        if (!isRunning() && hasFilePath()) {
            watcher = chokidar_1["default"]
                .watch(filePath, { persistent: true })
                .on('change', function () { return onChange(filePath); });
        }
        return Promise.resolve(filePath);
    };
    var stop = function () {
        if (isRunning()) {
            watcher.close();
            watcher = null;
        }
    };
    var move = function () {
        stop();
        start();
    };
    var setFilePath = function (nextFilePath) {
        if (isNewPath(nextFilePath)) {
            filePath = nextFilePath;
            if (isRunning()) {
                move();
            }
        }
        return Promise.resolve(filePath);
    };
    return {
        setFilePath: setFilePath,
        start: start,
        stop: stop
    };
};
exports.createFileWatcher = createFileWatcher;