109 lines
3.5 KiB
JavaScript
Executable File
109 lines
3.5 KiB
JavaScript
Executable File
#!/usr/bin/env node
|
|
|
|
/**
|
|
* @fileoverview Main CLI that is run via the eslint command.
|
|
* @author Nicholas C. Zakas
|
|
*/
|
|
|
|
/* eslint no-console:off */
|
|
|
|
"use strict";
|
|
|
|
// to use V8's code cache to speed up instantiation time
|
|
require("v8-compile-cache");
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Helpers
|
|
//------------------------------------------------------------------------------
|
|
|
|
const useStdIn = process.argv.includes("--stdin"),
|
|
init = process.argv.includes("--init"),
|
|
debug = process.argv.includes("--debug");
|
|
|
|
// must do this initialization *before* other requires in order to work
|
|
if (debug) {
|
|
require("debug").enable("eslint:*,-eslint:code-path");
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Requirements
|
|
//------------------------------------------------------------------------------
|
|
|
|
// now we can safely include the other modules that use debug
|
|
const path = require("path"),
|
|
fs = require("fs"),
|
|
cli = require("../lib/cli");
|
|
|
|
//------------------------------------------------------------------------------
|
|
// Execution
|
|
//------------------------------------------------------------------------------
|
|
|
|
process.once("uncaughtException", err => {
|
|
|
|
// lazy load
|
|
const lodash = require("lodash");
|
|
|
|
if (typeof err.messageTemplate === "string" && err.messageTemplate.length > 0) {
|
|
const template = lodash.template(fs.readFileSync(path.resolve(__dirname, `../messages/${err.messageTemplate}.txt`), "utf-8"));
|
|
const pkg = require("../package.json");
|
|
|
|
console.error("\nOops! Something went wrong! :(");
|
|
console.error(`\nESLint: ${pkg.version}.\n\n${template(err.messageData || {})}`);
|
|
} else {
|
|
console.error(err.stack);
|
|
}
|
|
|
|
process.exitCode = 2;
|
|
});
|
|
|
|
if (useStdIn) {
|
|
|
|
/*
|
|
* Note: See
|
|
* - https://github.com/nodejs/node/blob/master/doc/api/process.md#processstdin
|
|
* - https://github.com/nodejs/node/blob/master/doc/api/process.md#a-note-on-process-io
|
|
* - https://lists.gnu.org/archive/html/bug-gnu-emacs/2016-01/msg00419.html
|
|
* - https://github.com/nodejs/node/issues/7439 (historical)
|
|
*
|
|
* On Windows using `fs.readFileSync(STDIN_FILE_DESCRIPTOR, "utf8")` seems
|
|
* to read 4096 bytes before blocking and never drains to read further data.
|
|
*
|
|
* The investigation on the Emacs thread indicates:
|
|
*
|
|
* > Emacs on MS-Windows uses pipes to communicate with subprocesses; a
|
|
* > pipe on Windows has a 4K buffer. So as soon as Emacs writes more than
|
|
* > 4096 bytes to the pipe, the pipe becomes full, and Emacs then waits for
|
|
* > the subprocess to read its end of the pipe, at which time Emacs will
|
|
* > write the rest of the stuff.
|
|
*
|
|
* Using the nodejs code example for reading from stdin.
|
|
*/
|
|
let contents = "",
|
|
chunk = "";
|
|
|
|
process.stdin.setEncoding("utf8");
|
|
process.stdin.on("readable", () => {
|
|
|
|
// Use a loop to make sure we read all available data.
|
|
while ((chunk = process.stdin.read()) !== null) {
|
|
contents += chunk;
|
|
}
|
|
});
|
|
|
|
process.stdin.on("end", () => {
|
|
process.exitCode = cli.execute(process.argv, contents, "utf8");
|
|
});
|
|
} else if (init) {
|
|
const configInit = require("../lib/init/config-initializer");
|
|
|
|
configInit.initializeConfig().then(() => {
|
|
process.exitCode = 0;
|
|
}).catch(err => {
|
|
process.exitCode = 1;
|
|
console.error(err.message);
|
|
console.error(err.stack);
|
|
});
|
|
} else {
|
|
process.exitCode = cli.execute(process.argv);
|
|
}
|