Adolfo Reyna
41 lines
1.4 KiB
JavaScript
41 lines
1.4 KiB
JavaScript
"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.installFileWatcher = void 0;
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const node_fs_1 = __importDefault(require("node:fs"));
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const installFileWatcher = ({ file, onChange, }) => {
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const existedAtBeginning = node_fs_1.default.existsSync(file);
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let existedBefore = existedAtBeginning;
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const listener = () => {
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const existsNow = node_fs_1.default.existsSync(file);
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if (!existedBefore && existsNow) {
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onChange('created');
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existedBefore = true;
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return;
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}
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if (existedBefore && !existsNow) {
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onChange('deleted');
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existedBefore = false;
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return;
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}
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if (existsNow) {
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if (typeof Deno !== 'undefined') {
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// Deno always goes here, even if the file has not changed.
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// Don't support this for now.
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return;
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}
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onChange('changed');
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}
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};
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node_fs_1.default.watchFile(file, { interval: 100 }, listener);
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return {
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exists: existedAtBeginning,
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unwatch: () => {
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node_fs_1.default.unwatchFile(file, listener);
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},
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};
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};
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exports.installFileWatcher = installFileWatcher;
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