fc9ed65762
Summary:
Quick notes:
- This looks worse than it is. It adds mandatory parentheses to single argument lambdas. Lots of outrage on Twitter about it, personally I'm {emoji:1f937_200d_2642} about it.
- Space before function, e.g. `a = function ()` is now enforced. I like this because both were fine before.
- I added `eslint-config-prettier` to the config because otherwise a ton of rules conflict with eslint itself.
Close https://github.com/facebook/flipper/pull/915
Reviewed By: jknoxville
Differential Revision: D20594929
fbshipit-source-id: ca1c65376b90e009550dd6d1f4e0831d32cbff03
119 lines
3.1 KiB
TypeScript
119 lines
3.1 KiB
TypeScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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*/
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import {Client} from 'fb-watchman';
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import {v4 as uuid} from 'uuid';
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import path from 'path';
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export default class Watchman {
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constructor(private rootDir: string) {}
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private client?: Client;
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private watch?: any;
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private relativeRoot?: string;
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async initialize(): Promise<void> {
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if (this.client) {
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return;
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}
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this.client = new Client();
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this.client.setMaxListeners(250);
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await new Promise((resolve, reject) => {
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const onError = (err: Error) => {
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this.client!.removeAllListeners('error');
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reject(err);
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this.client!.end();
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delete this.client;
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};
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this.client!.once('error', onError);
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this.client!.capabilityCheck(
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{optional: [], required: ['relative_root']},
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(error) => {
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if (error) {
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onError(error);
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return;
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}
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this.client!.command(
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['watch-project', this.rootDir],
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(error, resp) => {
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if (error) {
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onError(error);
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return;
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}
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if ('warning' in resp) {
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console.warn(resp.warning);
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}
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this.watch = resp.watch;
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this.relativeRoot = resp.relative_path;
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resolve();
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},
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);
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},
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);
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});
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}
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async startWatchFiles(
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relativeDir: string,
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handler: (resp: any) => void,
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options: {excludes: string[]},
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): Promise<void> {
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if (!this.watch) {
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throw new Error(
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'Watchman is not initialized, please call "initialize" function and wait for the returned promise completion before calling "startWatchFiles".',
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);
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}
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options = Object.assign({excludes: []}, options);
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return new Promise((resolve, reject) => {
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this.client!.command(['clock', this.watch], (error, resp) => {
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if (error) {
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return reject(error);
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}
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try {
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const {clock} = resp;
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const sub = {
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expression: [
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'allof',
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['not', ['type', 'd']],
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...options!.excludes.map((e) => [
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'not',
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['match', e, 'wholename'],
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]),
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],
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fields: ['name'],
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since: clock,
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relative_root: this.relativeRoot
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? path.join(this.relativeRoot, relativeDir)
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: relativeDir,
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};
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const id = uuid();
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this.client!.command(['subscribe', this.watch, id, sub], (error) => {
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if (error) {
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return reject(error);
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}
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this.client!.on('subscription', (resp) => {
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if (resp.subscription !== id || !resp.files) {
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return;
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}
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handler(resp);
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});
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resolve();
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});
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} catch (err) {
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reject(err);
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}
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});
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});
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}
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}
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