I don’t know what you mean by closure. But it is the “webpack” file.
#!/usr/bin/env node
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
var path = require("path");
// Local version replace global one
try {
var localWebpack = require.resolve(path.join(process.cwd(), "node_modules", "webpack", "bin", "webpack.js"));
if(__filename !== localWebpack) {
return require(localWebpack);
}
} catch(e) {}
var yargs = require("yargs")
.usage("webpack " + require("../package.json").version + "\n" +
"Usage: https://webpack.js.org/api/cli/\n" +
"Usage without config file: webpack <entry> [<entry>] <output>\n" +
"Usage with config file: webpack");
require("./config-yargs")(yargs);
var DISPLAY_GROUP = "Stats options:";
var BASIC_GROUP = "Basic options:";
yargs.options({
"json": {
type: "boolean",
alias: "j",
describe: "Prints the result as JSON."
},
"progress": {
type: "boolean",
describe: "Print compilation progress in percentage",
group: BASIC_GROUP
},
"color": {
type: "boolean",
alias: "colors",
default: function supportsColor() {
return require("supports-color");
},
group: DISPLAY_GROUP,
describe: "Enables/Disables colors on the console"
},
"sort-modules-by": {
type: "string",
group: DISPLAY_GROUP,
describe: "Sorts the modules list by property in module"
},
"sort-chunks-by": {
type: "string",
group: DISPLAY_GROUP,
describe: "Sorts the chunks list by property in chunk"
},
"sort-assets-by": {
type: "string",
group: DISPLAY_GROUP,
describe: "Sorts the assets list by property in asset"
},
"hide-modules": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Hides info about modules"
},
"display-exclude": {
type: "string",
group: DISPLAY_GROUP,
describe: "Exclude modules in the output"
},
"display-modules": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display even excluded modules in the output"
},
"display-max-modules": {
type: "number",
group: DISPLAY_GROUP,
describe: "Sets the maximum number of visible modules in output"
},
"display-chunks": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display chunks in the output"
},
"display-entrypoints": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display entry points in the output"
},
"display-origins": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display origins of chunks in the output"
},
"display-cached": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display also cached modules in the output"
},
"display-cached-assets": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display also cached assets in the output"
},
"display-reasons": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display reasons about module inclusion in the output"
},
"display-depth": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display distance from entry point for each module"
},
"display-used-exports": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display information about used exports in modules (Tree Shaking)"
},
"display-provided-exports": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display information about exports provided from modules"
},
"display-optimization-bailout": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display information about why optimization bailed out for modules"
},
"display-error-details": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Display details about errors"
},
"display": {
type: "string",
group: DISPLAY_GROUP,
describe: "Select display preset (verbose, detailed, normal, minimal, errors-only, none)"
},
"verbose": {
type: "boolean",
group: DISPLAY_GROUP,
describe: "Show more details"
}
});
// yargs will terminate the process early when the user uses help or version.
// This causes large help outputs to be cut short (https://github.com/nodejs/node/wiki/API-changes-between-v0.10-and-v4#process).
// To prevent this we use the yargs.parse API and exit the process normally
yargs.parse(process.argv.slice(2), (err, argv, output) => {
// arguments validation failed
if(err && output) {
console.error(output);
process.exitCode = 1;
return;
}
// help or version info
if(output) {
console.log(output);
return;
}
if(argv.verbose) {
argv["display"] = "verbose";
}
var options = require("./convert-argv")(yargs, argv);
function ifArg(name, fn, init) {
if(Array.isArray(argv[name])) {
if(init) init();
argv[name].forEach(fn);
} else if(typeof argv[name] !== "undefined") {
if(init) init();
fn(argv[name], -1);
}
}
function processOptions(options) {
// process Promise
if(typeof options.then === "function") {
options.then(processOptions).catch(function(err) {
console.error(err.stack || err);
process.exit(1); // eslint-disable-line
});
return;
}
var firstOptions = [].concat(options)[0];
var statsPresetToOptions = require("../lib/Stats.js").presetToOptions;
var outputOptions = options.stats;
if(typeof outputOptions === "boolean" || typeof outputOptions === "string") {
outputOptions = statsPresetToOptions(outputOptions);
} else if(!outputOptions) {
outputOptions = {};
}
ifArg("display", function(preset) {
outputOptions = statsPresetToOptions(preset);
});
outputOptions = Object.create(outputOptions);
if(Array.isArray(options) && !outputOptions.children) {
outputOptions.children = options.map(o => o.stats);
}
if(typeof outputOptions.context === "undefined")
outputOptions.context = firstOptions.context;
ifArg("env", function(value) {
if(outputOptions.env) {
outputOptions._env = value;
}
});
ifArg("json", function(bool) {
if(bool)
outputOptions.json = bool;
});
if(typeof outputOptions.colors === "undefined")
outputOptions.colors = require("supports-color");
ifArg("sort-modules-by", function(value) {
outputOptions.modulesSort = value;
});
ifArg("sort-chunks-by", function(value) {
outputOptions.chunksSort = value;
});
ifArg("sort-assets-by", function(value) {
outputOptions.assetsSort = value;
});
ifArg("display-exclude", function(value) {
outputOptions.exclude = value;
});
if(!outputOptions.json) {
if(typeof outputOptions.cached === "undefined")
outputOptions.cached = false;
if(typeof outputOptions.cachedAssets === "undefined")
outputOptions.cachedAssets = false;
ifArg("display-chunks", function(bool) {
if(bool) {
outputOptions.modules = false;
outputOptions.chunks = true;
outputOptions.chunkModules = true;
}
});
ifArg("display-entrypoints", function(bool) {
if(bool)
outputOptions.entrypoints = true;
});
ifArg("display-reasons", function(bool) {
if(bool)
outputOptions.reasons = true;
});
ifArg("display-depth", function(bool) {
if(bool)
outputOptions.depth = true;
});
ifArg("display-used-exports", function(bool) {
if(bool)
outputOptions.usedExports = true;
});
ifArg("display-provided-exports", function(bool) {
if(bool)
outputOptions.providedExports = true;
});
ifArg("display-optimization-bailout", function(bool) {
if(bool)
outputOptions.optimizationBailout = bool;
});
ifArg("display-error-details", function(bool) {
if(bool)
outputOptions.errorDetails = true;
});
ifArg("display-origins", function(bool) {
if(bool)
outputOptions.chunkOrigins = true;
});
ifArg("display-max-modules", function(value) {
outputOptions.maxModules = +value;
});
ifArg("display-cached", function(bool) {
if(bool)
outputOptions.cached = true;
});
ifArg("display-cached-assets", function(bool) {
if(bool)
outputOptions.cachedAssets = true;
});
if(!outputOptions.exclude)
outputOptions.exclude = ["node_modules", "bower_components", "components"];
if(argv["display-modules"]) {
outputOptions.maxModules = Infinity;
outputOptions.exclude = undefined;
outputOptions.modules = true;
}
}
ifArg("hide-modules", function(bool) {
if(bool) {
outputOptions.modules = false;
outputOptions.chunkModules = false;
}
});
var webpack = require("../lib/webpack.js");
Error.stackTraceLimit = 30;
var lastHash = null;
var compiler;
try {
compiler = webpack(options);
} catch(e) {
var WebpackOptionsValidationError = require("../lib/WebpackOptionsValidationError");
if(e instanceof WebpackOptionsValidationError) {
if(argv.color)
console.error("\u001b[1m\u001b[31m" + e.message + "\u001b[39m\u001b[22m");
else
console.error(e.message);
process.exit(1); // eslint-disable-line no-process-exit
}
throw e;
}
if(argv.progress) {
var ProgressPlugin = require("../lib/ProgressPlugin");
compiler.apply(new ProgressPlugin({
profile: argv.profile
}));
}
function compilerCallback(err, stats) {
if(!options.watch || err) {
// Do not keep cache anymore
compiler.purgeInputFileSystem();
}
if(err) {
lastHash = null;
console.error(err.stack || err);
if(err.details) console.error(err.details);
process.exit(1); // eslint-disable-line
}
if(outputOptions.json) {
process.stdout.write(JSON.stringify(stats.toJson(outputOptions), null, 2) + "\n");
} else if(stats.hash !== lastHash) {
lastHash = stats.hash;
var statsString = stats.toString(outputOptions);
if(statsString)
process.stdout.write(statsString + "\n");
}
if(!options.watch && stats.hasErrors()) {
process.exitCode = 2;
}
}
if(firstOptions.watch || options.watch) {
var watchOptions = firstOptions.watchOptions || firstOptions.watch || options.watch || {};
if(watchOptions.stdin) {
process.stdin.on("end", function() {
process.exit(); // eslint-disable-line
});
process.stdin.resume();
}
compiler.watch(watchOptions, compilerCallback);
console.log("\nWebpack is watching the files…\n");
} else
compiler.run(compilerCallback);
}
processOptions(options);
});