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const fs = require("fs");
const path = require("path");
const { pathToFileURL } = require("url");
const Module = require("module");
const { program, Option } = require("commander");
const utils = require("./utils");
class WebpackCLI {
constructor() {
// Global
this.webpack = require(process.env.WEBPACK_PACKAGE || "webpack");
this.logger = utils.logger;
this.utils = utils;
// Initialize program
this.program = program;
this.program.name("webpack");
this.program.configureOutput({
writeErr: this.logger.error,
outputError: (str, write) =>
write(
`Error: ${this.utils.capitalizeFirstLetter(str.replace(/^error:/, "").trim())}`,
),
});
}
async tryRequireThenImport(module, handleError = true) {
let result;
try {
result = require(module);
} catch (error) {
let previousModuleCompile;
// TODO Workaround https://github.com/zertosh/v8-compile-cache/issues/30
if (this._originalModuleCompile) {
previousModuleCompile = Module.prototype._compile;
Module.prototype._compile = this._originalModuleCompile;
}
const dynamicImportLoader = this.utils.dynamicImportLoader();
if (this._originalModuleCompile) {
Module.prototype._compile = previousModuleCompile;
}
if (
(error.code === "ERR_REQUIRE_ESM" ||
process.env.WEBPACK_CLI_FORCE_LOAD_ESM_CONFIG) &&
pathToFileURL &&
dynamicImportLoader
) {
const urlForConfig = pathToFileURL(module);
result = await dynamicImportLoader(urlForConfig);
result = result.default;
return result;
}
if (handleError) {
this.logger.error(error);
process.exit(2);
} else {
throw error;
}
}
// For babel/typescript
if (result.default) {
result = result.default;
}
return result;
}
loadJSONFile(pathToFile) {
let result;
try {
result = require(pathToFile);
} catch (error) {
this.logger.error(error);
process.exit(2);
}
return result;
}
async makeCommand(commandOptions, options, action) {
const alreadyLoaded = this.program.commands.find(
(command) =>
command.name() === commandOptions.name.split(" ")[0] ||
command.aliases().includes(commandOptions.alias),
);
if (alreadyLoaded) {
return;
}
const command = this.program.command(commandOptions.name, {
noHelp: commandOptions.noHelp,
hidden: commandOptions.hidden,
isDefault: commandOptions.isDefault,
});
if (commandOptions.description) {
command.description(commandOptions.description, commandOptions.argsDescription);
}
if (commandOptions.usage) {
command.usage(commandOptions.usage);
}
if (Array.isArray(commandOptions.alias)) {
command.aliases(commandOptions.alias);
} else {
command.alias(commandOptions.alias);
}
if (commandOptions.pkg) {
command.pkg = commandOptions.pkg;
} else {
command.pkg = "webpack-cli";
}
const { forHelp } = this.program;
let allDependenciesInstalled = true;
if (commandOptions.dependencies && commandOptions.dependencies.length > 0) {
for (const dependency of commandOptions.dependencies) {
const { packageExists } = this.utils;
const isPkgExist = packageExists(dependency);
if (isPkgExist) {
continue;
} else if (!isPkgExist && forHelp) {
allDependenciesInstalled = false;
continue;
}
const { promptInstallation, colors } = this.utils;
await promptInstallation(dependency, () => {
this.logger.error(
`For using '${colors.green(
commandOptions.name.split(" ")[0],
)}' command you need to install: '${colors.green(dependency)}' package`,
);
});
}
}
if (options) {
if (typeof options === "function") {
if (forHelp && !allDependenciesInstalled) {
command.description(
`${
commandOptions.description
} To see all available options you need to install ${commandOptions.dependencies
.map((dependency) => `'${dependency}'`)
.join(",")}.`,
);
options = [];
} else {
options = options();
}
}
options.forEach((optionForCommand) => {
this.makeOption(command, optionForCommand);
});
}
command.action(action);
return command;
}
makeOption(command, option) {
let mainOption;
let negativeOption;
if (option.configs) {
let needNegativeOption = false;
const mainOptionType = new Set();
option.configs.forEach((config) => {
// Possible value: "enum" | "string" | "path" | "number" | "boolean" | "RegExp" | "reset"
switch (config.type) {
case "reset":
mainOptionType.add(Boolean);
break;
case "boolean":
if (!needNegativeOption) {
needNegativeOption = true;
}
mainOptionType.add(Boolean);
break;
case "number":
mainOptionType.add(Number);
break;
case "string":
case "path":
case "RegExp":
mainOptionType.add(String);
break;
case "enum": {
let hasFalseEnum = false;
const enumTypes = config.values.map((value) => {
switch (typeof value) {
case "string":
mainOptionType.add(String);
break;
case "number":
mainOptionType.add(Number);
break;
case "boolean":
if (!hasFalseEnum && value === false) {
hasFalseEnum = true;
break;
}
mainOptionType.add(Boolean);
break;
}
});
if (!needNegativeOption) {
needNegativeOption = hasFalseEnum;
}
return enumTypes;
}
}
});
mainOption = {
flags: option.alias ? `-${option.alias}, --${option.name}` : `--${option.name}`,
description: option.description || "",
type: mainOptionType,
multiple: option.multiple,
defaultValue: option.defaultValue,
};
if (needNegativeOption) {
negativeOption = {
flags: `--no-${option.name}`,
description: option.negatedDescription
? option.negatedDescription
: `Negative '${option.name}' option.`,
};
}
} else {
mainOption = {
flags: option.alias ? `-${option.alias}, --${option.name}` : `--${option.name}`,
// TODO `describe` used by `webpack-dev-server@3`
description: option.description || option.describe || "",
type: option.type
? new Set(Array.isArray(option.type) ? option.type : [option.type])
: new Set([Boolean]),
multiple: option.multiple,
defaultValue: option.defaultValue,
};
if (option.negative) {
negativeOption = {
flags: `--no-${option.name}`,
description: option.negatedDescription
? option.negatedDescription
: `Negative '${option.name}' option.`,
};
}
}
if (mainOption.type.size > 1 && mainOption.type.has(Boolean)) {
mainOption.flags = `${mainOption.flags} [value${mainOption.multiple ? "..." : ""}]`;
} else if (mainOption.type.size > 0 && !mainOption.type.has(Boolean)) {
mainOption.flags = `${mainOption.flags} <value${mainOption.multiple ? "..." : ""}>`;
}
if (mainOption.type.size === 1) {
if (mainOption.type.has(Number)) {
let skipDefault = true;
const optionForCommand = new Option(mainOption.flags, mainOption.description)
.argParser((value, prev = []) => {
if (mainOption.defaultValue && mainOption.multiple && skipDefault) {
prev = [];
skipDefault = false;
}
return mainOption.multiple
? [].concat(prev).concat(Number(value))
: Number(value);
})
.default(mainOption.defaultValue);
optionForCommand.helpLevel = option.helpLevel;
command.addOption(optionForCommand);
} else if (mainOption.type.has(String)) {
let skipDefault = true;
const optionForCommand = new Option(mainOption.flags, mainOption.description)
.argParser((value, prev = []) => {
if (mainOption.defaultValue && mainOption.multiple && skipDefault) {
prev = [];
skipDefault = false;
}
return mainOption.multiple ? [].concat(prev).concat(value) : value;
})
.default(mainOption.defaultValue);
optionForCommand.helpLevel = option.helpLevel;
command.addOption(optionForCommand);
} else if (mainOption.type.has(Boolean)) {
const optionForCommand = new Option(
mainOption.flags,
mainOption.description,
).default(mainOption.defaultValue);
optionForCommand.helpLevel = option.helpLevel;
command.addOption(optionForCommand);
} else {
const optionForCommand = new Option(mainOption.flags, mainOption.description)
.argParser(Array.from(mainOption.type)[0])
.default(mainOption.defaultValue);
optionForCommand.helpLevel = option.helpLevel;
command.addOption(optionForCommand);
}
} else if (mainOption.type.size > 1) {
let skipDefault = true;
const optionForCommand = new Option(
mainOption.flags,
mainOption.description,
mainOption.defaultValue,
)
.argParser((value, prev = []) => {
if (mainOption.defaultValue && mainOption.multiple && skipDefault) {
prev = [];
skipDefault = false;
}
if (mainOption.type.has(Number)) {
const numberValue = Number(value);
if (!isNaN(numberValue)) {
return mainOption.multiple
? [].concat(prev).concat(numberValue)
: numberValue;
}
}
if (mainOption.type.has(String)) {
return mainOption.multiple ? [].concat(prev).concat(value) : value;
}
return value;
})
.default(mainOption.defaultValue);
optionForCommand.helpLevel = option.helpLevel;
command.addOption(optionForCommand);
} else if (mainOption.type.size === 0 && negativeOption) {
const optionForCommand = new Option(mainOption.flags, mainOption.description);
// Hide stub option
optionForCommand.hideHelp();
optionForCommand.helpLevel = option.helpLevel;
command.addOption(optionForCommand);
}
if (negativeOption) {
const optionForCommand = new Option(negativeOption.flags, negativeOption.description);
optionForCommand.helpLevel = option.helpLevel;
command.addOption(optionForCommand);
}
}
getBuiltInOptions() {
if (this.builtInOptionsCache) {
return this.builtInOptionsCache;
}
const minimumHelpFlags = [
"config",
"config-name",
"merge",
"env",
"mode",
"watch",
"watch-options-stdin",
"stats",
"devtool",
"entry",
"target",
"progress",
"json",
"name",
"output-path",
"node-env",
];
const builtInFlags = [
// For configs
{
name: "config",
alias: "c",
configs: [
{
type: "string",
},
],
multiple: true,
description:
"Provide path to a webpack configuration file e.g. ./webpack.config.js.",
},
{
name: "config-name",
configs: [
{
type: "string",
},
],
multiple: true,
description: "Name of the configuration to use.",
},
{
name: "merge",
alias: "m",
configs: [
{
type: "enum",
values: [true],
},
],
description: "Merge two or more configurations using 'webpack-merge'.",
},
// Complex configs
{
name: "env",
type: (value, previous = {}) => {
// for https://github.com/webpack/webpack-cli/issues/2642
if (value.endsWith("=")) {
value.concat('""');
}
// This ensures we're only splitting by the first `=`
const [allKeys, val] = value.split(/=(.+)/, 2);
const splitKeys = allKeys.split(/\.(?!$)/);
let prevRef = previous;
splitKeys.forEach((someKey, index) => {
if (!prevRef[someKey]) {
prevRef[someKey] = {};
}
if (typeof prevRef[someKey] === "string") {
prevRef[someKey] = {};
}
if (index === splitKeys.length - 1) {
if (typeof val === "string") {
prevRef[someKey] = val;
} else {
prevRef[someKey] = true;
}
}
prevRef = prevRef[someKey];
});
return previous;
},
multiple: true,
description: "Environment passed to the configuration when it is a function.",
},
{
name: "node-env",
configs: [
{
type: "string",
},
],
multiple: false,
description: "Sets process.env.NODE_ENV to the specified value.",
},
// Adding more plugins
{
name: "hot",
alias: "h",
configs: [
{
type: "string",
},
{
type: "boolean",
},
],
negative: true,
description: "Enables Hot Module Replacement",
negatedDescription: "Disables Hot Module Replacement.",
},
{
name: "analyze",
configs: [
{
type: "enum",
values: [true],
},
],
multiple: false,
description: "It invokes webpack-bundle-analyzer plugin to get bundle information.",
},
{
name: "progress",
configs: [
{
type: "string",
},
{
type: "enum",
values: [true],
},
],
description: "Print compilation progress during build.",
},
{
name: "prefetch",
configs: [
{
type: "string",
},
],
description: "Prefetch this request.",
},
// Output options
{
name: "json",
configs: [
{
type: "string",
},
{
type: "enum",
values: [true],
},
],
alias: "j",
description: "Prints result as JSON or store it in a file.",
},
// For webpack@4
{
name: "entry",
configs: [
{
type: "string",
},
],
multiple: true,
description: "The entry point(s) of your application e.g. ./src/main.js.",
},
{
name: "output-path",
alias: "o",
configs: [
{
type: "string",
},
],
description: "Output location of the file generated by webpack e.g. ./dist/.",
},
{
name: "target",
alias: "t",
configs: [
{
type: "string",
},
],
multiple: this.webpack.cli !== undefined,
description: "Sets the build target e.g. node.",
},
{
name: "devtool",
configs: [
{
type: "string",
},
{
type: "enum",
values: [false],
},
],
negative: true,
alias: "d",
description: "Determine source maps to use.",
negatedDescription: "Do not generate source maps.",
},
{
name: "mode",
configs: [
{
type: "string",
},
],
description: "Defines the mode to pass to webpack.",
},
{
name: "name",
configs: [
{
type: "string",
},
],
description:
"Name of the configuration. Used when loading multiple configurations.",
},
{
name: "stats",
configs: [
{
type: "string",
},
{
type: "boolean",
},
],
negative: true,
description: "It instructs webpack on how to treat the stats e.g. verbose.",
negatedDescription: "Disable stats output.",
},
{
name: "watch",
configs: [
{
type: "boolean",
},
],
negative: true,
alias: "w",
description: "Watch for files changes.",
negatedDescription: "Do not watch for file changes.",
},
{
name: "watch-options-stdin",
configs: [
{
type: "boolean",
},
],
negative: true,
description: "Stop watching when stdin stream has ended.",
negatedDescription: "Do not stop watching when stdin stream has ended.",
},
];
// Extract all the flags being exported from core.
// A list of cli flags generated by core can be found here https://github.com/webpack/webpack/blob/master/test/__snapshots__/Cli.test.js.snap
const coreFlags = this.webpack.cli
? Object.entries(this.webpack.cli.getArguments()).map(([flag, meta]) => {
const inBuiltIn = builtInFlags.find((builtInFlag) => builtInFlag.name === flag);
if (inBuiltIn) {
return {
...meta,
name: flag,
group: "core",
...inBuiltIn,
configs: meta.configs || [],
};
}
return { ...meta, name: flag, group: "core" };
})
: [];
const options = []
.concat(
builtInFlags.filter(
(builtInFlag) =>
!coreFlags.find((coreFlag) => builtInFlag.name === coreFlag.name),
),
)
.concat(coreFlags)
.map((option) => {
option.helpLevel = minimumHelpFlags.includes(option.name) ? "minimum" : "verbose";
return option;
});
this.builtInOptionsCache = options;
return options;
}
applyNodeEnv(options) {
if (typeof options.nodeEnv === "string") {
process.env.NODE_ENV = options.nodeEnv;
}
}
async run(args, parseOptions) {
// Built-in internal commands
const buildCommandOptions = {
name: "build [entries...]",
alias: ["bundle", "b"],
description: "Run webpack (default command, can be omitted).",
usage: "[entries...] [options]",
};
const watchCommandOptions = {
name: "watch [entries...]",
alias: "w",
description: "Run webpack and watch for files changes.",
usage: "[entries...] [options]",
};
const versionCommandOptions = {
name: "version [commands...]",
alias: "v",
description:
"Output the version number of 'webpack', 'webpack-cli' and 'webpack-dev-server' and commands.",
};
const helpCommandOptions = {
name: "help [command] [option]",
alias: "h",
description: "Display help for commands and options.",
};
// Built-in external commands
const externalBuiltInCommandsInfo = [
{
name: "serve [entries...]",
alias: ["server", "s"],
pkg: "@webpack-cli/serve",
},
{
name: "info",
alias: "i",
pkg: "@webpack-cli/info",
},
{
name: "init",
alias: ["create", "new", "c", "n"],
pkg: "@webpack-cli/generators",
},
{
name: "loader",
alias: "l",
pkg: "@webpack-cli/generators",
},
{
name: "plugin",
alias: "p",
pkg: "@webpack-cli/generators",
},
{
name: "migrate",
alias: "m",
pkg: "@webpack-cli/migrate",
},
{
name: "configtest [config-path]",
alias: "t",
pkg: "@webpack-cli/configtest",
},
];
const knownCommands = [
buildCommandOptions,
watchCommandOptions,
versionCommandOptions,
helpCommandOptions,
...externalBuiltInCommandsInfo,
];
const getCommandName = (name) => name.split(" ")[0];
const isKnownCommand = (name) =>
knownCommands.find(
(command) =>
getCommandName(command.name) === name ||
(Array.isArray(command.alias)
? command.alias.includes(name)
: command.alias === name),
);
const isCommand = (input, commandOptions) => {
const longName = getCommandName(commandOptions.name);
if (input === longName) {
return true;
}
if (commandOptions.alias) {
if (Array.isArray(commandOptions.alias)) {
return commandOptions.alias.includes(input);
} else {
return commandOptions.alias === input;
}
}
return false;
};
const findCommandByName = (name) =>
this.program.commands.find(
(command) => name === command.name() || command.aliases().includes(name),
);
const isOption = (value) => value.startsWith("-");
const isGlobalOption = (value) =>
value === "--color" ||
value === "--no-color" ||
value === "-v" ||
value === "--version" ||
value === "-h" ||
value === "--help";
const loadCommandByName = async (commandName, allowToInstall = false) => {
const isBuildCommandUsed = isCommand(commandName, buildCommandOptions);
const isWatchCommandUsed = isCommand(commandName, watchCommandOptions);
if (isBuildCommandUsed || isWatchCommandUsed) {
const options = this.getBuiltInOptions();
await this.makeCommand(
isBuildCommandUsed ? buildCommandOptions : watchCommandOptions,
isWatchCommandUsed
? options.filter((option) => option.name !== "watch")
: options,
async (entries, options) => {
if (entries.length > 0) {
options.entry = [...entries, ...(options.entry || [])];
}
await this.buildCommand(options, isWatchCommandUsed);
},
);
} else if (isCommand(commandName, helpCommandOptions)) {
// Stub for the `help` command
this.makeCommand(helpCommandOptions, [], () => {});
} else if (isCommand(commandName, versionCommandOptions)) {
// Stub for the `help` command
this.makeCommand(versionCommandOptions, [], () => {});
} else {
const builtInExternalCommandInfo = externalBuiltInCommandsInfo.find(
(externalBuiltInCommandInfo) =>
getCommandName(externalBuiltInCommandInfo.name) === commandName ||
(Array.isArray(externalBuiltInCommandInfo.alias)
? externalBuiltInCommandInfo.alias.includes(commandName)
: externalBuiltInCommandInfo.alias === commandName),
);
let pkg;
if (builtInExternalCommandInfo) {
({ pkg } = builtInExternalCommandInfo);
} else {
pkg = commandName;
}
if (pkg !== "webpack-cli" && !this.utils.packageExists(pkg)) {
if (!allowToInstall) {
return;
}
const { promptInstallation, colors } = this.utils;
pkg = await promptInstallation(pkg, () => {
this.logger.error(
`For using this command you need to install: '${colors.green(
pkg,
)}' package`,
);
});
}
let loadedCommand;
try {
loadedCommand = await this.tryRequireThenImport(pkg, false);
} catch (error) {
// Ignore, command is not installed
return;
}
let command;
try {
command = new loadedCommand();
await command.apply(this);
} catch (error) {
this.logger.error(`Unable to load '${pkg}' command`);
this.logger.error(error);
process.exit(2);
}
}
};
// Register own exit
this.program.exitOverride(async (error) => {
if (error.exitCode === 0) {
process.exit(0);
}
if (error.code === "executeSubCommandAsync") {
process.exit(2);
}
if (error.code === "commander.help") {
process.exit(0);
}
if (error.code === "commander.unknownOption") {
let name = error.message.match(/'(.+)'/);
if (name) {
name = name[1].substr(2);
if (name.includes("=")) {
name = name.split("=")[0];
}
const { operands } = this.program.parseOptions(this.program.args);
const operand =
typeof operands[0] !== "undefined"
? operands[0]
: getCommandName(buildCommandOptions.name);
if (operand) {
const command = findCommandByName(operand);
if (!command) {
this.logger.error(`Can't find and load command '${operand}'`);
this.logger.error(
"Run 'webpack --help' to see available commands and options",
);
process.exit(2);
}
command.options.forEach((option) => {
if (
!option.hidden &&
this.utils.levenshtein.distance(name, option.long.slice(2)) < 3
) {
this.logger.error(`Did you mean '--${option.name()}'?`);
}
});
}
}
}
// Codes:
// - commander.unknownCommand
// - commander.missingArgument
// - commander.missingMandatoryOptionValue
// - commander.optionMissingArgument
this.logger.error("Run 'webpack --help' to see available commands and options");
process.exit(2);
});
// Default `--color` and `--no-color` options
const cli = this;
this.program.option("--color", "Enable colors on console.");
this.program.on("option:color", function () {
const { color } = this.opts();
cli.utils.colors.options.changed = true;
cli.utils.colors.options.enabled = color;
});
this.program.option("--no-color", "Disable colors on console.");
this.program.on("option:no-color", function () {
const { color } = this.opts();
cli.utils.colors.options.changed = true;
cli.utils.colors.options.enabled = color;
});
// Make `-v, --version` options
// Make `version|v [commands...]` command
const outputVersion = async (options) => {
// Filter `bundle`, `watch`, `version` and `help` commands
const possibleCommandNames = options.filter(
(option) =>
!isCommand(option, buildCommandOptions) &&
!isCommand(option, watchCommandOptions) &&
!isCommand(option, versionCommandOptions) &&
!isCommand(option, helpCommandOptions),
);
possibleCommandNames.forEach((possibleCommandName) => {
if (!isOption(possibleCommandName)) {
return;
}
this.logger.error(`Unknown option '${possibleCommandName}'`);
this.logger.error("Run 'webpack --help' to see available commands and options");
process.exit(2);
});
if (possibleCommandNames.length > 0) {
await Promise.all(
possibleCommandNames.map((possibleCommand) =>
loadCommandByName(possibleCommand),
),
);
for (const possibleCommandName of possibleCommandNames) {
const foundCommand = findCommandByName(possibleCommandName);
if (!foundCommand) {
this.logger.error(`Unknown command '${possibleCommandName}'`);
this.logger.error(
"Run 'webpack --help' to see available commands and options",
);
process.exit(2);
}
try {
const { name, version } = this.loadJSONFile(
`${foundCommand.pkg}/package.json`,
);
this.logger.raw(`${name} ${version}`);
} catch (e) {
this.logger.error(
`Error: External package '${foundCommand.pkg}' not found`,
);
process.exit(2);
}
}
}
const pkgJSON = this.loadJSONFile("../package.json");
this.logger.raw(`webpack ${this.webpack.version}`);
this.logger.raw(`webpack-cli ${pkgJSON.version}`);
if (this.utils.packageExists("webpack-dev-server")) {
const { version } = this.loadJSONFile("webpack-dev-server/package.json");
this.logger.raw(`webpack-dev-server ${version}`);
}
process.exit(0);
};
this.program.option(
"-v, --version",
"Output the version number of 'webpack', 'webpack-cli' and 'webpack-dev-server' and commands.",
);
const outputHelp = async (options, isVerbose, isHelpCommandSyntax, program) => {
const { bold } = this.utils.colors;
const outputIncorrectUsageOfHelp = () => {
this.logger.error("Incorrect use of help");
this.logger.error(
"Please use: 'webpack help [command] [option]' | 'webpack [command] --help'",
);
this.logger.error("Run 'webpack --help' to see available commands and options");
process.exit(2);
};
const isGlobalHelp = options.length === 0;
const isCommandHelp = options.length === 1 && !isOption(options[0]);
if (isGlobalHelp || isCommandHelp) {
program.configureHelp({
sortSubcommands: true,
// Support multiple aliases
commandUsage: (command) => {
let parentCmdNames = "";
for (
let parentCmd = command.parent;
parentCmd;
parentCmd = parentCmd.parent
) {
parentCmdNames = `${parentCmd.name()} ${parentCmdNames}`;
}
if (isGlobalHelp) {
return `${parentCmdNames}${command.usage()}\n${this.utils.colors.bold(
"Alternative usage to run commands:",
)} ${parentCmdNames}[command] [options]`;
}
return `${parentCmdNames}${command.name()}|${command
.aliases()
.join("|")} ${command.usage()}`;
},
// Support multiple aliases
subcommandTerm: (command) => {
const humanReadableArgumentName = (argument) => {
const nameOutput =
argument.name + (argument.variadic === true ? "..." : "");
return argument.required
? "<" + nameOutput + ">"
: "[" + nameOutput + "]";
};
const args = command._args
.map((arg) => humanReadableArgumentName(arg))
.join(" ");
return `${command.name()}|${command.aliases().join("|")}${
args ? ` ${args}` : ""
}${command.options.length > 0 ? " [options]" : ""}`;
},
visibleOptions: function visibleOptions(command) {
return command.options.filter((option) => {
if (option.hidden) {
return false;
}
switch (option.helpLevel) {
case "verbose":
return isVerbose;
case "minimum":
default:
return true;
}
});
},
padWidth(command, helper) {
return Math.max(
helper.longestArgumentTermLength(command, helper),
helper.longestOptionTermLength(command, helper),
// For global options
helper.longestOptionTermLength(program, helper),
helper.longestSubcommandTermLength(
isGlobalHelp ? program : command,
helper,
),
);
},
formatHelp: (command, helper) => {
const termWidth = helper.padWidth(command, helper);
const helpWidth =
helper.helpWidth || process.env.WEBPACK_CLI_HELP_WIDTH || 80;
const itemIndentWidth = 2;
const itemSeparatorWidth = 2; // between term and description
const formatItem = (term, description) => {
if (description) {
const fullText = `${term.padEnd(
termWidth + itemSeparatorWidth,
)}${description}`;
return helper.wrap(
fullText,
helpWidth - itemIndentWidth,
termWidth + itemSeparatorWidth,
);
}
return term;
};
const formatList = (textArray) =>
textArray.join("\n").replace(/^/gm, " ".repeat(itemIndentWidth));
// Usage
let output = [`${bold("Usage:")} ${helper.commandUsage(command)}`, ""];
// Description
const commandDescription = isGlobalHelp
? "The build tool for modern web applications."
: helper.commandDescription(command);
if (commandDescription.length > 0) {
output = output.concat([commandDescription, ""]);
}
// Arguments
const argumentList = helper
.visibleArguments(command)
.map((argument) => formatItem(argument.term, argument.description));
if (argumentList.length > 0) {
output = output.concat([
bold("Arguments:"),
formatList(argumentList),
"",
]);
}
// Options
const optionList = helper
.visibleOptions(command)
.map((option) =>
formatItem(
helper.optionTerm(option),
helper.optionDescription(option),
),
);
if (optionList.length > 0) {
output = output.concat([bold("Options:"), formatList(optionList), ""]);
}
// Global options
const globalOptionList = program.options.map((option) =>
formatItem(helper.optionTerm(option), helper.optionDescription(option)),
);
if (globalOptionList.length > 0) {
output = output.concat([
bold("Global options:"),
formatList(globalOptionList),
"",
]);
}
// Commands
const commandList = helper
.visibleCommands(isGlobalHelp ? program : command)
.map((command) =>
formatItem(
helper.subcommandTerm(command),
helper.subcommandDescription(command),
),
);
if (commandList.length > 0) {
output = output.concat([
bold("Commands:"),
formatList(commandList),
"",
]);
}
return output.join("\n");
},
});
if (isGlobalHelp) {
await Promise.all(
knownCommands.map((knownCommand) => {
return loadCommandByName(getCommandName(knownCommand.name));
}),
);
const buildCommand = findCommandByName(
getCommandName(buildCommandOptions.name),
);
this.logger.raw(buildCommand.helpInformation());
} else {
const name = options[0];
await loadCommandByName(name);
const command = findCommandByName(name);
if (!command) {
const builtInCommandUsed = externalBuiltInCommandsInfo.find(
(command) => command.name.includes(name) || name === command.alias,
);
if (typeof builtInCommandUsed !== "undefined") {
this.logger.error(
`For using '${name}' command you need to install '${builtInCommandUsed.pkg}' package`,
);
} else {
this.logger.error(`Can't find and load command '${name}'`);
this.logger.error(
"Run 'webpack --help' to see available commands and options",
);
}
process.exit(2);
}
this.logger.raw(command.helpInformation());
}
} else if (isHelpCommandSyntax) {
let isCommandSpecified = false;
let commandName = getCommandName(buildCommandOptions.name);
let optionName;
if (options.length === 1) {
optionName = options[0];
} else if (options.length === 2) {
isCommandSpecified = true;
commandName = options[0];
optionName = options[1];
if (isOption(commandName)) {
outputIncorrectUsageOfHelp();
}
} else {
outputIncorrectUsageOfHelp();
}
await loadCommandByName(commandName);
const command = isGlobalOption(optionName)
? program
: findCommandByName(commandName);
if (!command) {
this.logger.error(`Can't find and load command '${commandName}'`);
this.logger.error("Run 'webpack --help' to see available commands and options");
process.exit(2);
}
const option = command.options.find(
(option) => option.short === optionName || option.long === optionName,
);
if (!option) {
this.logger.error(`Unknown option '${optionName}'`);
this.logger.error("Run 'webpack --help' to see available commands and options");
process.exit(2);
}
const nameOutput =
option.flags.replace(/^.+[[<]/, "").replace(/(\.\.\.)?[\]>].*$/, "") +
(option.variadic === true ? "..." : "");
const value = option.required
? "<" + nameOutput + ">"
: option.optional
? "[" + nameOutput + "]"
: "";
this.logger.raw(
`${bold("Usage")}: webpack${isCommandSpecified ? ` ${commandName}` : ""} ${
option.long
}${value ? ` ${value}` : ""}`,
);
if (option.short) {
this.logger.raw(
`${bold("Short:")} webpack${isCommandSpecified ? ` ${commandName}` : ""} ${
option.short
}${value ? ` ${value}` : ""}`,
);
}
if (option.description) {
this.logger.raw(`${bold("Description:")} ${option.description}`);
}
if (!option.negate && options.defaultValue) {
this.logger.raw(
`${bold("Default value:")} ${JSON.stringify(option.defaultValue)}`,
);
}
this.logger.raw("");
// TODO implement this after refactor cli arguments
// logger.raw('Possible values: foo | bar');
// logger.raw('Documentation: https://webpack.js.org/option/name/');
} else {
outputIncorrectUsageOfHelp();
}
this.logger.raw(
"To see list of all supported commands and options run 'webpack --help=verbose'.\n",
);
this.logger.raw(`${bold("Webpack documentation:")} https://webpack.js.org/.`);
this.logger.raw(`${bold("CLI documentation:")} https://webpack.js.org/api/cli/.`);
this.logger.raw(`${bold("Made with ♥ by the webpack team")}.`);
process.exit(0);
};
this.program.helpOption(false);
this.program.addHelpCommand(false);
this.program.option("-h, --help [verbose]", "Display help for commands and options.");
let isInternalActionCalled = false;
// Default action
this.program.usage("[options]");
this.program.allowUnknownOption(true);
this.program.action(async (options, program) => {
if (!isInternalActionCalled) {
isInternalActionCalled = true;
} else {
this.logger.error("No commands found to run");
process.exit(2);
}
// Command and options
const { operands, unknown } = this.program.parseOptions(program.args);
const defaultCommandToRun = getCommandName(buildCommandOptions.name);
const hasOperand = typeof operands[0] !== "undefined";
const operand = hasOperand ? operands[0] : defaultCommandToRun;
const isHelpOption = typeof options.help !== "undefined";
const isHelpCommandSyntax = isCommand(operand, helpCommandOptions);
if (isHelpOption || isHelpCommandSyntax) {
let isVerbose = false;
if (isHelpOption) {
if (typeof options.help === "string") {
if (options.help !== "verbose") {
this.logger.error(
"Unknown value for '--help' option, please use '--help=verbose'",
);
process.exit(2);
}
isVerbose = true;
}
}
this.program.forHelp = true;
const optionsForHelp = []
.concat(isHelpOption && hasOperand ? [operand] : [])
// Syntax `webpack help [command]`
.concat(operands.slice(1))
// Syntax `webpack help [option]`
.concat(unknown)
.concat(
isHelpCommandSyntax && typeof options.color !== "undefined"
? [options.color ? "--color" : "--no-color"]
: [],
)
.concat(
isHelpCommandSyntax && typeof options.version !== "undefined"
? ["--version"]
: [],
);
await outputHelp(optionsForHelp, isVerbose, isHelpCommandSyntax, program);
}
const isVersionOption = typeof options.version !== "undefined";
const isVersionCommandSyntax = isCommand(operand, versionCommandOptions);
if (isVersionOption || isVersionCommandSyntax) {
const optionsForVersion = []
.concat(isVersionOption ? [operand] : [])
.concat(operands.slice(1))
.concat(unknown);
await outputVersion(optionsForVersion, program);
}
let commandToRun = operand;
let commandOperands = operands.slice(1);
if (isKnownCommand(commandToRun)) {
await loadCommandByName(commandToRun, true);
} else {
const isEntrySyntax = fs.existsSync(operand);
if (isEntrySyntax) {
commandToRun = defaultCommandToRun;
commandOperands = operands;
await loadCommandByName(commandToRun);
} else {
this.logger.error(`Unknown command or entry '${operand}'`);
const found = knownCommands.find(
(commandOptions) =>
this.utils.levenshtein.distance(
operand,
getCommandName(commandOptions.name),
) < 3,
);
if (found) {
this.logger.error(
`Did you mean '${getCommandName(found.name)}' (alias '${
Array.isArray(found.alias) ? found.alias.join(", ") : found.alias
}')?`,
);
}
this.logger.error("Run 'webpack --help' to see available commands and options");
process.exit(2);
}
}
await this.program.parseAsync([commandToRun, ...commandOperands, ...unknown], {
from: "user",
});
});
await this.program.parseAsync(args, parseOptions);
}
async resolveConfig(options) {
const loadConfig = async (configPath) => {
const { interpret } = this.utils;
const ext = path.extname(configPath);
const interpreted = Object.keys(interpret.jsVariants).find(
(variant) => variant === ext,
);
if (interpreted) {
const { rechoir } = this.utils;
try {
rechoir.prepare(interpret.extensions, configPath);
} catch (error) {
if (error.failures) {
this.logger.error(`Unable load '${configPath}'`);
this.logger.error(error.message);
error.failures.forEach((failure) => {
this.logger.error(failure.error.message);
});
this.logger.error("Please install one of them");
process.exit(2);
}
this.logger.error(error);
process.exit(2);
}
}
let options;
try {
options = await this.tryRequireThenImport(configPath, false);
} catch (error) {
this.logger.error(`Failed to load '${configPath}' config`);
if (this.isValidationError(error)) {
this.logger.error(error.message);
} else {
this.logger.error(error);
}
process.exit(2);
}
return { options, path: configPath };
};
const evaluateConfig = async (loadedConfig, argv) => {
const isMultiCompiler = Array.isArray(loadedConfig.options);
const config = isMultiCompiler ? loadedConfig.options : [loadedConfig.options];
const evaluatedConfig = await Promise.all(
config.map(async (rawConfig) => {
if (typeof rawConfig.then === "function") {
rawConfig = await rawConfig;
}
// `Promise` may return `Function`
if (typeof rawConfig === "function") {
// when config is a function, pass the env from args to the config function
rawConfig = await rawConfig(argv.env, argv);
}
return rawConfig;
}),
);
loadedConfig.options = isMultiCompiler ? evaluatedConfig : evaluatedConfig[0];
const isObject = (value) => typeof value === "object" && value !== null;
if (!isObject(loadedConfig.options) && !Array.isArray(loadedConfig.options)) {
this.logger.error(`Invalid configuration in '${loadedConfig.path}'`);
process.exit(2);
}
return loadedConfig;
};
const config = { options: {}, path: new WeakMap() };
if (options.config && options.config.length > 0) {
const evaluatedConfigs = await Promise.all(
options.config.map(async (value) =>
evaluateConfig(await loadConfig(path.resolve(value)), options.argv || {}),
),
);
config.options = [];
evaluatedConfigs.forEach((evaluatedConfig) => {
if (Array.isArray(evaluatedConfig.options)) {
evaluatedConfig.options.forEach((options) => {
config.options.push(options);
config.path.set(options, evaluatedConfig.path);
});
} else {
config.options.push(evaluatedConfig.options);
config.path.set(evaluatedConfig.options, evaluatedConfig.path);
}
});
config.options = config.options.length === 1 ? config.options[0] : config.options;
} else {
const { interpret } = this.utils;
// Order defines the priority, in decreasing order
const defaultConfigFiles = [
"webpack.config",
".webpack/webpack.config",
".webpack/webpackfile",
]
.map((filename) =>
// Since .cjs is not available on interpret side add it manually to default config extension list
[...Object.keys(interpret.extensions), ".cjs"].map((ext) => ({
path: path.resolve(filename + ext),
ext: ext,
module: interpret.extensions[ext],
})),
)
.reduce((accumulator, currentValue) => accumulator.concat(currentValue), []);
let foundDefaultConfigFile;
for (const defaultConfigFile of defaultConfigFiles) {
if (!fs.existsSync(defaultConfigFile.path)) {
continue;
}
foundDefaultConfigFile = defaultConfigFile;
break;
}
if (foundDefaultConfigFile) {
const loadedConfig = await loadConfig(foundDefaultConfigFile.path);
const evaluatedConfig = await evaluateConfig(loadedConfig, options.argv || {});
config.options = evaluatedConfig.options;
if (Array.isArray(config.options)) {
config.options.forEach((options) => {
config.path.set(options, evaluatedConfig.path);
});
} else {
config.path.set(evaluatedConfig.options, evaluatedConfig.path);
}
}
}
if (options.configName) {
const notfoundConfigNames = [];
config.options = options.configName.map((configName) => {
let found;
if (Array.isArray(config.options)) {
found = config.options.find((options) => options.name === configName);
} else {
found = config.options.name === configName ? config.options : undefined;
}
if (!found) {
notfoundConfigNames.push(configName);
}
return found;
});
if (notfoundConfigNames.length > 0) {
this.logger.error(
notfoundConfigNames
.map(
(configName) =>
`Configuration with the name "${configName}" was not found.`,
)
.join(" "),
);
process.exit(2);
}
}
if (options.merge) {
const merge = await this.tryRequireThenImport("webpack-merge");
// we can only merge when there are multiple configurations
// either by passing multiple configs by flags or passing a
// single config exporting an array
if (!Array.isArray(config.options) || config.options.length <= 1) {
this.logger.error("At least two configurations are required for merge.");
process.exit(2);
}
const mergedConfigPaths = [];
config.options = config.options.reduce((accumulator, options) => {
const configPath = config.path.get(options);
const mergedOptions = merge(accumulator, options);
mergedConfigPaths.push(configPath);
return mergedOptions;
}, {});
config.path.set(config.options, mergedConfigPaths);
}
return config;
}
// TODO refactor
async applyOptions(config, options) {
if (options.analyze) {
if (!this.utils.packageExists("webpack-bundle-analyzer")) {
const { promptInstallation, colors } = this.utils;
await promptInstallation("webpack-bundle-analyzer", () => {
this.logger.error(
`It looks like ${colors.yellow(
"webpack-bundle-analyzer",
)} is not installed.`,
);
});
this.logger.success(
`${colors.yellow("webpack-bundle-analyzer")} was installed successfully.`,
);
}
}
if (typeof options.progress === "string" && options.progress !== "profile") {
this.logger.error(
`'${options.progress}' is an invalid value for the --progress option. Only 'profile' is allowed.`,
);
process.exit(2);
}
if (typeof options.hot === "string" && options.hot !== "only") {
this.logger.error(
`'${options.hot}' is an invalid value for the --hot option. Use 'only' instead.`,
);
process.exit(2);
}
const outputHints = (configOptions) => {
if (
configOptions.watch &&
options.argv &&
options.argv.env &&
(options.argv.env["WEBPACK_WATCH"] || options.argv.env["WEBPACK_SERVE"])
) {
this.logger.warn(
`No need to use the '${
options.argv.env["WEBPACK_WATCH"] ? "watch" : "serve"
}' command together with '{ watch: true }' configuration, it does not make sense.`,
);
if (options.argv.env["WEBPACK_SERVE"]) {
configOptions.watch = false;
}
}
return configOptions;
};
config.options = Array.isArray(config.options)
? config.options.map((options) => outputHints(options))
: outputHints(config.options);
if (this.webpack.cli) {
const processArguments = (configOptions) => {
const args = this.getBuiltInOptions()
.filter((flag) => flag.group === "core")
.reduce((accumulator, flag) => {
accumulator[flag.name] = flag;
return accumulator;
}, {});
const values = Object.keys(options).reduce((accumulator, name) => {
if (name === "argv") {
return accumulator;
}
const kebabName = this.utils.toKebabCase(name);
if (args[kebabName]) {
accumulator[kebabName] = options[name];
}
return accumulator;
}, {});
const problems = this.webpack.cli.processArguments(args, configOptions, values);
if (problems) {
const groupBy = (xs, key) => {
return xs.reduce((rv, x) => {
(rv[x[key]] = rv[x[key]] || []).push(x);
return rv;
}, {});
};
const problemsByPath = groupBy(problems, "path");
for (const path in problemsByPath) {
const problems = problemsByPath[path];
problems.forEach((problem) => {
this.logger.error(
`${this.utils.capitalizeFirstLetter(
problem.type.replace(/-/g, " "),
)}${problem.value ? ` '${problem.value}'` : ""} for the '--${
problem.argument
}' option${problem.index ? ` by index '${problem.index}'` : ""}`,
);
if (problem.expected) {
this.logger.error(`Expected: '${problem.expected}'`);
}
});
}
process.exit(2);
}
return configOptions;
};
config.options = Array.isArray(config.options)
? config.options.map((options) => processArguments(options))
: processArguments(config.options);
const setupDefaultOptions = (configOptions) => {
// No need to run for webpack@4
if (configOptions.cache && configOptions.cache.type === "filesystem") {
const configPath = config.path.get(configOptions);
if (configPath) {
if (!configOptions.cache.buildDependencies) {
configOptions.cache.buildDependencies = {};
}
if (!configOptions.cache.buildDependencies.defaultConfig) {
configOptions.cache.buildDependencies.defaultConfig = [];
}
if (Array.isArray(configPath)) {
configPath.forEach((item) => {
configOptions.cache.buildDependencies.defaultConfig.push(item);
});
} else {
configOptions.cache.buildDependencies.defaultConfig.push(configPath);
}
}
}
return configOptions;
};
config.options = Array.isArray(config.options)
? config.options.map((options) => setupDefaultOptions(options))
: setupDefaultOptions(config.options);
}
// Logic for webpack@4
// TODO remove after drop webpack@4
const processLegacyArguments = (configOptions) => {
if (options.entry) {
configOptions.entry = options.entry;
}
if (options.outputPath) {
configOptions.output = {
...configOptions.output,
...{ path: path.resolve(options.outputPath) },
};
}
if (options.target) {
configOptions.target = options.target;
}
if (typeof options.devtool !== "undefined") {
configOptions.devtool = options.devtool;
}
if (options.mode) {
configOptions.mode = options.mode;
} else if (
!configOptions.mode &&
process.env &&
process.env.NODE_ENV &&
(process.env.NODE_ENV === "development" ||
process.env.NODE_ENV === "production" ||
process.env.NODE_ENV === "none")
) {
configOptions.mode = process.env.NODE_ENV;
}
if (options.name) {
configOptions.name = options.name;
}
if (typeof options.stats !== "undefined") {
configOptions.stats = options.stats;
}
if (typeof options.watch !== "undefined") {
configOptions.watch = options.watch;
}
if (typeof options.watchOptionsStdin !== "undefined") {
configOptions.watchOptions = {
...configOptions.watchOptions,
...{ stdin: options.watchOptionsStdin },
};
}
return configOptions;
};
config.options = Array.isArray(config.options)
? config.options.map((options) => processLegacyArguments(options))
: processLegacyArguments(config.options);
// Apply `stats` and `stats.colors` options
const applyStatsColors = (configOptions) => {
// TODO remove after drop webpack@4
const statsForWebpack4 = this.webpack.Stats && this.webpack.Stats.presetToOptions;
if (statsForWebpack4) {
if (typeof configOptions.stats === "undefined") {
configOptions.stats = {};
} else if (
typeof configOptions.stats === "boolean" ||
typeof configOptions.stats === "string"
) {
if (
typeof configOptions.stats === "string" &&
configOptions.stats !== "none" &&
configOptions.stats !== "verbose" &&
configOptions.stats !== "detailed" &&
configOptions.stats !== "minimal" &&
configOptions.stats !== "errors-only" &&
configOptions.stats !== "errors-warnings"
) {
return configOptions;
}
configOptions.stats = this.webpack.Stats.presetToOptions(configOptions.stats);
}
} else {
if (typeof configOptions.stats === "undefined") {
configOptions.stats = { preset: "normal" };
} else if (typeof configOptions.stats === "boolean") {
configOptions.stats = configOptions.stats
? { preset: "normal" }
: { preset: "none" };
} else if (typeof configOptions.stats === "string") {
configOptions.stats = { preset: configOptions.stats };
}
}
let colors;
// From arguments
if (typeof this.utils.colors.options.changed !== "undefined") {
colors = Boolean(this.utils.colors.options.enabled);
}
// From stats
else if (typeof configOptions.stats.colors !== "undefined") {
colors = configOptions.stats.colors;
}
// Default
else {
colors = Boolean(this.utils.colors.options.enabled);
}
configOptions.stats.colors = colors;
return configOptions;
};
config.options = Array.isArray(config.options)
? config.options.map((options) => applyStatsColors(options))
: applyStatsColors(config.options);
return config;
}
async applyCLIPlugin(config, cliOptions) {
const CLIPlugin = await this.tryRequireThenImport("./plugins/CLIPlugin");
const addCLIPlugin = (configOptions) => {
if (!configOptions.plugins) {
configOptions.plugins = [];
}
configOptions.plugins.unshift(
new CLIPlugin({
configPath: config.path.get(configOptions),
helpfulOutput: !cliOptions.json,
hot: cliOptions.hot,
progress: cliOptions.progress,
prefetch: cliOptions.prefetch,
analyze: cliOptions.analyze,
}),
);
return configOptions;
};
config.options = Array.isArray(config.options)
? config.options.map((options) => addCLIPlugin(options))
: addCLIPlugin(config.options);
return config;
}
needWatchStdin(compiler) {
if (compiler.compilers) {
return compiler.compilers.some(
(compiler) => compiler.options.watchOptions && compiler.options.watchOptions.stdin,
);
}
return compiler.options.watchOptions && compiler.options.watchOptions.stdin;
}
isValidationError(error) {
// https://github.com/webpack/webpack/blob/master/lib/index.js#L267
// https://github.com/webpack/webpack/blob/v4.44.2/lib/webpack.js#L90
const ValidationError =
this.webpack.ValidationError || this.webpack.WebpackOptionsValidationError;
return error instanceof ValidationError || error.name === "ValidationError";
}
async createCompiler(options, callback) {
this.applyNodeEnv(options);
let config = await this.resolveConfig(options);
config = await this.applyOptions(config, options);
config = await this.applyCLIPlugin(config, options);
let compiler;
try {
compiler = this.webpack(
config.options,
callback
? (error, stats) => {
if (error && this.isValidationError(error)) {
this.logger.error(error.message);
process.exit(2);
}
callback(error, stats);
}
: callback,
);
} catch (error) {
if (this.isValidationError(error)) {
this.logger.error(error.message);
} else {
this.logger.error(error);
}
process.exit(2);
}
// TODO webpack@4 return Watching and MultiWatching instead Compiler and MultiCompiler, remove this after drop webpack@4
if (compiler && compiler.compiler) {
compiler = compiler.compiler;
}
return compiler;
}
async buildCommand(options, isWatchCommand) {
// eslint-disable-next-line prefer-const
let compiler;
let createJsonStringifyStream;
if (options.json) {
const jsonExt = await this.tryRequireThenImport("@discoveryjs/json-ext");
createJsonStringifyStream = jsonExt.stringifyStream;
}
const callback = (error, stats) => {
if (error) {
this.logger.error(error);
process.exit(2);
}
if (stats.hasErrors()) {
process.exitCode = 1;
}
if (!compiler) {
return;
}
const statsOptions = compiler.compilers
? {
children: compiler.compilers.map((compiler) =>
compiler.options ? compiler.options.stats : undefined,
),
}
: compiler.options
? compiler.options.stats
: undefined;
// TODO webpack@4 doesn't support `{ children: [{ colors: true }, { colors: true }] }` for stats
const statsForWebpack4 = this.webpack.Stats && this.webpack.Stats.presetToOptions;
if (compiler.compilers && statsForWebpack4) {
statsOptions.colors = statsOptions.children.some((child) => child.colors);
}
if (options.json && createJsonStringifyStream) {
const handleWriteError = (error) => {
this.logger.error(error);
process.exit(2);
};
if (options.json === true) {
createJsonStringifyStream(stats.toJson(statsOptions))
.on("error", handleWriteError)
.pipe(process.stdout)
.on("error", handleWriteError)
.on("close", () => process.stdout.write("\n"));
} else {
createJsonStringifyStream(stats.toJson(statsOptions))
.on("error", handleWriteError)
.pipe(fs.createWriteStream(options.json))
.on("error", handleWriteError)
// Use stderr to logging
.on("close", () =>
process.stderr.write(
`[webpack-cli] ${this.utils.colors.green(
`stats are successfully stored as json to ${options.json}`,
)}\n`,
),
);
}
} else {
const printedStats = stats.toString(statsOptions);
// Avoid extra empty line when `stats: 'none'`
if (printedStats) {
this.logger.raw(printedStats);
}
}
};
const env =
isWatchCommand || options.watch
? { WEBPACK_WATCH: true, ...options.env }
: { WEBPACK_BUNDLE: true, WEBPACK_BUILD: true, ...options.env };
options.argv = { ...options, env };
if (isWatchCommand) {
options.watch = true;
}
compiler = await this.createCompiler(options, callback);
if (!compiler) {
return;
}
const isWatch = (compiler) =>
compiler.compilers
? compiler.compilers.some((compiler) => compiler.options.watch)
: compiler.options.watch;
if (isWatch(compiler) && this.needWatchStdin(compiler)) {
process.stdin.on("end", () => {
process.exit(0);
});
process.stdin.resume();
}
}
}
module.exports = WebpackCLI;