-
-
Notifications
You must be signed in to change notification settings - Fork 1.4k
/
watch.js
134 lines (109 loc) · 3.42 KB
/
watch.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
import fs from 'fs';
import * as rollup from 'rollup';
import chalk from 'chalk';
import ms from 'pretty-ms';
import mergeOptions from './mergeOptions.js';
import batchWarnings from './batchWarnings.js';
import loadConfigFile from './loadConfigFile.js';
import relativeId from '../../../src/utils/relativeId.js';
import { handleError, stderr } from '../logging.js';
export default function watch(configFile, configs, command, silent) {
process.stderr.write('\x1b[?1049h'); // alternate screen buffer
const warnings = batchWarnings();
let watcher;
let configWatcher;
let closed = false;
function start(configs) {
stderr(`\x1B[2J\x1B[0f${chalk.underline( `rollup v${rollup.VERSION}` )}`); // clear, move to top-left
configs = configs.map(options => {
const merged = mergeOptions(options, command);
const onwarn = merged.inputOptions.onwarn;
if ( onwarn ) {
merged.inputOptions.onwarn = warning => {
onwarn( warning, warnings.add );
};
} else {
merged.inputOptions.onwarn = warnings.add;
}
const result = Object.assign({}, merged.inputOptions, {
output: merged.outputOptions
});
if (merged.deprecations.length) {
if (!result.watch) result.watch = {};
result.watch._deprecations = merged.deprecations;
}
return result;
});
watcher = rollup.watch(configs);
watcher.on('event', event => {
switch (event.code) {
case 'FATAL':
process.stderr.write('\x1b[?1049l'); // reset screen buffer
handleError(event.error, true);
process.exit(1);
break;
case 'ERROR':
warnings.flush();
handleError(event.error, true);
break;
case 'START':
stderr(`\x1B[2J\x1B[0f${chalk.underline( `rollup v${rollup.VERSION}` )}`); // clear, move to top-left
break;
case 'BUNDLE_START':
if ( !silent ) stderr( chalk.cyan( `\n${chalk.bold( event.input )} → ${chalk.bold( event.output.map( relativeId ).join( ', ' ) )}...` ) );
break;
case 'BUNDLE_END':
warnings.flush();
if ( !silent ) stderr( chalk.green( `created ${chalk.bold( event.output.map( relativeId ).join( ', ' ) )} in ${chalk.bold(ms(event.duration))}` ) );
break;
case 'END':
if ( !silent ) stderr( `\nwaiting for changes...` );
}
});
}
const close = () => {
if (!closed) {
process.stderr.write('\x1b[?1049l'); // reset screen buffer
closed = true;
watcher.close();
if (configWatcher) configWatcher.close();
}
};
process.on('SIGINT', close); // ctrl-c
process.on('SIGTERM', close); // killall node
process.on('uncaughtException', close); // on error
process.stdin.on('end', close); // in case we ever support stdin!
start(configs);
if (configFile && !configFile.startsWith('node:')) {
let restarting = false;
let aborted = false;
let configFileData = fs.readFileSync(configFile, 'utf-8');
const restart = () => {
const newConfigFileData = fs.readFileSync(configFile, 'utf-8');
if (newConfigFileData === configFileData) return;
configFileData = newConfigFileData;
if (restarting) {
aborted = true;
return;
}
restarting = true;
loadConfigFile(configFile, silent)
.then(configs => {
restarting = false;
if (aborted) {
aborted = false;
restart();
} else {
watcher.close();
start(configs);
}
})
.catch(err => {
handleError(err, true);
});
};
configWatcher = fs.watch(configFile, event => {
if (event === 'change') restart();
});
}
}