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Add --watch=always option to prevent exit when stdin closes (#9966)

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* Support `--flag=value` syntax for manually-parsed CLI args

* Don’t exit when stdin closes if using `--watch=always`

* Update changelog
This commit is contained in:
Jordan Pittman 2022-11-29 14:57:07 -05:00 • committed by GitHub
parent 705d21397c
commit 1d23dcbe92
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 31 additions and 15 deletions
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37
src/cli.js
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@ -62,7 +62,10 @@ let commands = {
args: {
'--input': { type: String, description: 'Input file' },
'--output': { type: String, description: 'Output file' },
'--watch': { type: Boolean, description: 'Watch for changes and rebuild as needed' },
'--watch': {
type: oneOf(String, Boolean),
description: 'Watch for changes and rebuild as needed',
},
'--poll': {
type: Boolean,
description: 'Use polling instead of filesystem events when watching',
@ -159,8 +162,8 @@ let args = (() => {
let flag = result['_'][i]
if (!flag.startsWith('-')) continue
let flagName = flag
let handler = flags[flag]
let [flagName, flagValue] = flag.split('=')
let handler = flags[flagName]
// Resolve flagName & handler
while (typeof handler === 'string') {
@ -173,19 +176,27 @@ let args = (() => {
let args = []
let offset = i + 1
// Parse args for current flag
while (result['_'][offset] && !result['_'][offset].startsWith('-')) {
args.push(result['_'][offset++])
// --flag value syntax was used so we need to pull `value` from `args`
if (flagValue === undefined) {
// Parse args for current flag
while (result['_'][offset] && !result['_'][offset].startsWith('-')) {
args.push(result['_'][offset++])
}
// Cleanup manually parsed flags + args
result['_'].splice(i, 1 + args.length)
// No args were provided, use default value defined in handler
// One arg was provided, use that directly
// Multiple args were provided so pass them all in an array
flagValue = args.length === 0 ? undefined : args.length === 1 ? args[0] : args
} else {
// Remove the whole flag from the args array
result['_'].splice(i, 1)
}
// Cleanup manually parsed flags + args
result['_'].splice(i, 1 + args.length)
// Set the resolved value in the `result` object
result[flagName] = handler.type(
args.length === 0 ? undefined : args.length === 1 ? args[0] : args,
flagName
)
result[flagName] = handler.type(flagValue, flagName)
}
// Ensure that the `command` is always the first argument in the `args`.