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Introduce -l option (#854) 

gofmt has this option and it's very handy for commit-hooks.

Fixes #851
master
Christopher Chedeau 2017-03-02 19:47:36 -08:00 committed by James Long
parent 5523c4f56b
commit 205458a8d1
1 changed files with 9 additions and 2 deletions
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11
bin/prettier.js
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@ -22,6 +22,7 @@ const argv = minimist(process.argv.slice(2), {
// listed here is to avoid "Ignored unknown option: --no-color" warnings.
// See https://github.com/chalk/supports-color/#info for more information.
"color",
"list-different",
"help",
"version",
"debug-print-doc",
@ -31,7 +32,7 @@ const argv = minimist(process.argv.slice(2), {
],
string: ["print-width", "tab-width", "parser", "trailing-comma"],
default: { color: true, "bracket-spacing": true, parser: "babylon" },
alias: { help: "h", version: "v" },
alias: { help: "h", version: "v", "list-different": "l" },
unknown: param => {
if (param.startsWith("-")) {
console.warn("Ignored unknown option: " + param + "\n");
@ -178,6 +179,7 @@ if (argv["help"] || (!filepatterns.length && !stdin)) {
"Usage: prettier [opts] [filename ...]\n\n" +
"Available options:\n" +
" --write Edit the file in-place. (Beware!)\n" +
" --list-different or -l Print filenames of files that are different from prettier formatting\n" +
" --stdin Read input from stdin.\n" +
" --print-width <int> Specify the length of line that the printer will wrap on. Defaults to 80.\n" +
" --tab-width <int> Specify the number of spaces per indentation-level. Defaults to 2.\n" +
@ -188,7 +190,7 @@ if (argv["help"] || (!filepatterns.length && !stdin)) {
" Print trailing commas wherever possible. Defaults to none.\n" +
" --parser <flow|babylon> Specify which parse to use. Defaults to babylon.\n" +
" --color Colorize error messages. Defaults to true.\n" +
" --version Print prettier version.\n" +
" --version or -v Print prettier version.\n" +
"\n" +
"Boolean options can be turned off like this:\n" +
" --no-bracket-spacing\n" +
@ -264,6 +266,11 @@ if (stdin) {
if (output) {
console.log(output);
}
} else if (argv["list-different"]) {
if (input !== output) {
console.log(filename);
process.exitCode = 1;
}
} else {
// Don't use `console.log` here since it adds an extra newline at the end.
process.stdout.write(output);