githubmirror/webpack

lib/cli.js
983 строки27 KB
Alexander Akait
Reduce skipped tests across Node, Deno and Bun and prune dead WebAssembly filters (#21257)
24 июн 2026, 01:02
24 июн 2026, 01:02efeb5ce
/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/

"use strict";

const path = require("path");
const tty = require("tty");
const webpackSchema =
	/** @type {EXPECTED_ANY} */
	(require("../schemas/WebpackOptions.json"));

/** @typedef {import("json-schema").JSONSchema4} JSONSchema4 */
/** @typedef {import("json-schema").JSONSchema6} JSONSchema6 */
/** @typedef {import("json-schema").JSONSchema7} JSONSchema7 */
/** @typedef {JSONSchema4 | JSONSchema6 | JSONSchema7} JSONSchema */
/** @typedef {JSONSchema & { absolutePath: boolean, instanceof: string, cli: { helper?: boolean, exclude?: boolean, description?: string, negatedDescription?: string, resetDescription?: string } }} Schema */

/**
 * Defines the path item type used by this module.
 * @typedef {object} PathItem
 * @property {Schema} schema the part of the schema
 * @property {string} path the path in the config
 * @property {string} segment the JSON pointer segment of this schema part (absolute when starting with "#")
 */

/** @typedef {"unknown-argument" | "unexpected-non-array-in-path" | "unexpected-non-object-in-path" | "prototype-pollution-in-path" | "multiple-values-unexpected" | "invalid-value"} ProblemType */

/** @typedef {string | number | boolean | RegExp} Value */

/**
 * Defines the problem type used by this module.
 * @typedef {object} Problem
 * @property {ProblemType} type
 * @property {string} path
 * @property {string} argument
 * @property {Value=} value
 * @property {number=} index
 * @property {string=} expected
 */

/**
 * Defines the local problem type used by this module.
 * @typedef {object} LocalProblem
 * @property {ProblemType} type
 * @property {string} path
 * @property {string=} expected
 */

/** @typedef {{ [key: string]: EnumValue }} EnumValueObject */
/** @typedef {EnumValue[]} EnumValueArray */
/** @typedef {string | number | boolean | EnumValueObject | EnumValueArray | null} EnumValue */

/**
 * Defines the argument config type used by this module.
 * @typedef {object} ArgumentConfig
 * @property {string=} description
 * @property {string=} negatedDescription
 * @property {string} path
 * @property {boolean} multiple
 * @property {"enum" | "string" | "path" | "number" | "boolean" | "RegExp" | "reset"} type
 * @property {EnumValue[]=} values
 */

/** @typedef {"string" | "number" | "boolean"} SimpleType */

/**
 * Defines the argument type used by this module.
 * @typedef {object} Argument
 * @property {string | undefined} description
 * @property {SimpleType} simpleType
 * @property {boolean} multiple
 * @property {ArgumentConfig[]} configs
 */

/** @typedef {Record<string, Argument>} Flags */

/** @typedef {Record<string, EXPECTED_ANY>} ObjectConfiguration */

/**
 * Returns object of arguments.
 * @param {Schema=} schema a json schema to create arguments for (by default webpack schema is used)
 * @returns {Flags} object of arguments
 */
const getArguments = (schema = webpackSchema) => {
	/** @type {Flags} */
	const flags = {};

	/**
	 * Path to argument name.
	 * @param {string} input input
	 * @returns {string} result
	 */
	const pathToArgumentName = (input) =>
		input
			.replace(/\./g, "-")
			.replace(/\[\]/g, "")
			.replace(
				/(\p{Uppercase_Letter}+|\p{Lowercase_Letter}|\d)(\p{Uppercase_Letter}+)/gu,
				"$1-$2"
			)
			.replace(/-?[^\p{Uppercase_Letter}\p{Lowercase_Letter}\d]+/gu, "-")
			.toLowerCase();

	/**
	 * Returns schema part.
	 * @param {string} path path
	 * @returns {Schema} schema part
	 */
	const getSchemaPart = (path) => {
		const newPath = path.split("/");

		let schemaPart = schema;

		for (let i = 1; i < newPath.length; i++) {
			const inner = schemaPart[/** @type {keyof Schema} */ (newPath[i])];

			if (!inner) {
				break;
			}

			schemaPart = inner;
		}

		return schemaPart;
	};

	/**
	 * Returns description.
	 * @param {PathItem[]} path path in the schema
	 * @returns {string | undefined} description
	 */
	const getDescription = (path) => {
		for (const { schema } of path) {
			if (schema.cli) {
				if (schema.cli.helper) continue;
				if (schema.cli.description) return schema.cli.description;
			}
			if (schema.description) return schema.description;
		}
	};

	/**
	 * Gets negated description.
	 * @param {PathItem[]} path path in the schema
	 * @returns {string | undefined} negative description
	 */
	const getNegatedDescription = (path) => {
		for (const { schema } of path) {
			if (schema.cli) {
				if (schema.cli.helper) continue;
				if (schema.cli.negatedDescription) return schema.cli.negatedDescription;
			}
		}
	};

	/**
	 * Gets reset description.
	 * @param {PathItem[]} path path in the schema
	 * @returns {string | undefined} reset description
	 */
	const getResetDescription = (path) => {
		for (const { schema } of path) {
			if (schema.cli) {
				if (schema.cli.helper) continue;
				if (schema.cli.resetDescription) return schema.cli.resetDescription;
			}
		}
	};

	/**
	 * Schema to argument config.
	 * @param {Schema} schemaPart schema
	 * @returns {Pick<ArgumentConfig, "type" | "values"> | undefined} partial argument config
	 */
	const schemaToArgumentConfig = (schemaPart) => {
		if (schemaPart.enum) {
			return {
				type: "enum",
				values: schemaPart.enum
			};
		}
		if (schemaPart.const !== undefined) {
			return {
				type: "enum",
				values: [schemaPart.const]
			};
		}
		switch (schemaPart.type) {
			case "number":
				return {
					type: "number"
				};
			case "string":
				return {
					type: schemaPart.absolutePath ? "path" : "string"
				};
			case "boolean":
				return {
					type: "boolean"
				};
		}
		if (schemaPart.instanceof === "RegExp") {
			return {
				type: "RegExp"
			};
		}
		return undefined;
	};

	/**
	 * Adds the provided path to this object.
	 * @param {PathItem[]} path path in the schema
	 * @returns {void}
	 */
	const addResetFlag = (path) => {
		const schemaPath = path[0].path;
		const name = pathToArgumentName(`${schemaPath}.reset`);
		const description =
			getResetDescription(path) ||
			`Clear all items provided in '${schemaPath}' configuration. ${getDescription(
				path
			)}`;
		flags[name] = {
			configs: [
				{
					type: "reset",
					multiple: false,
					description,
					path: schemaPath
				}
			],
			description: undefined,
			simpleType:
				/** @type {SimpleType} */
				(/** @type {unknown} */ (undefined)),
			multiple: /** @type {boolean} */ (/** @type {unknown} */ (undefined))
		};
	};

	/**
	 * Joins the per-item segments into a JSON pointer (built only when needed).
	 * @param {PathItem[]} path full path in schema (deepest item first)
	 * @returns {string} JSON pointer to the deepest schema part
	 */
	const getOriginPath = (path) => {
		let origin = "";
		for (let i = path.length - 1; i >= 0; i--) {
			const { segment } = path[i];
			origin = segment[0] === "#" ? segment : origin + segment;
		}
		return origin;
	};

	/**
	 * Adds the provided path to this object.
	 * @param {PathItem[]} path full path in schema
	 * @param {boolean} multiple inside of an array
	 * @returns {number} number of arguments added
	 */
	const addFlag = (path, multiple) => {
		const argConfigBase = schemaToArgumentConfig(path[0].schema);
		if (!argConfigBase) return 0;

		const negatedDescription = getNegatedDescription(path);
		const name = pathToArgumentName(path[0].path);
		/** @type {ArgumentConfig} */
		const argConfig = {
			...argConfigBase,
			multiple,
			description: getDescription(path),
			path: path[0].path
		};

		if (negatedDescription) {
			argConfig.negatedDescription = negatedDescription;
		}

		if (!flags[name]) {
			flags[name] = {
				configs: [],
				description: undefined,
				simpleType:
					/** @type {SimpleType} */
					(/** @type {unknown} */ (undefined)),
				multiple: /** @type {boolean} */ (/** @type {unknown} */ (undefined))
			};
		}

		if (
			flags[name].configs.some(
				(item) => JSON.stringify(item) === JSON.stringify(argConfig)
			)
		) {
			return 0;
		}

		if (
			flags[name].configs.some(
				(item) => item.type === argConfig.type && item.multiple !== multiple
			)
		) {
			if (multiple) {
				throw new Error(
					`Conflicting schema for ${path[0].path} (${getOriginPath(
						path
					)}) with ${
						argConfig.type
					} type (array type must be before single item type)`
				);
			}
			return 0;
		}

		flags[name].configs.push(argConfig);

		return 1;
	};

	// TODO support `not`
	/**
	 * Returns added arguments.
	 * @param {Schema} schemaPart the current schema
	 * @param {string} schemaPath the current path in the config
	 * @param {PathItem[]} path all previous visited schemaParts
	 * @param {string | null} inArray if inside of an array, the path to the array
	 * @param {string} segment the JSON pointer segment of the current schema
	 * @returns {number} added arguments
	 */
	const traverse = (
		schemaPart,
		schemaPath = "",
		path = [],
		inArray = null,
		segment = "#"
	) => {
		while (schemaPart.$ref) {
			segment = schemaPart.$ref;
			schemaPart = getSchemaPart(schemaPart.$ref);
		}

		const repetitions = path.filter(({ schema }) => schema === schemaPart);
		if (
			repetitions.length >= 2 ||
			repetitions.some(({ path }) => path === schemaPath)
		) {
			return 0;
		}

		if (schemaPart.cli && schemaPart.cli.exclude) return 0;

		/** @type {PathItem[]} */
		const fullPath = [
			{ schema: schemaPart, path: schemaPath, segment },
			...path
		];

		let addedArguments = 0;

		addedArguments += addFlag(fullPath, Boolean(inArray));

		// Collect flags from both branches of a conditional schema.
		const conditional = /** @type {JSONSchema7} */ (schemaPart);
		if (conditional.if) {
			for (const key of /** @type {const} */ (["if", "then", "else"])) {
				const subSchema = conditional[key];
				if (subSchema && typeof subSchema === "object") {
					addedArguments += traverse(
						/** @type {Schema} */
						(subSchema),
						schemaPath,
						fullPath,
						inArray,
						`/${key}`
					);
				}
			}
		}

		if (schemaPart.type === "object") {
			if (schemaPart.properties) {
				for (const property of Object.keys(schemaPart.properties)) {
					addedArguments += traverse(
						/** @type {Schema} */
						(schemaPart.properties[property]),
						schemaPath ? `${schemaPath}.${property}` : property,
						fullPath,
						inArray,
						`/properties/${property}`
					);
				}
			}

			return addedArguments;
		}

		if (schemaPart.type === "array") {
			if (inArray) {
				return 0;
			}
			if (Array.isArray(schemaPart.items)) {
				const i = 0;
				for (const item of schemaPart.items) {
					addedArguments += traverse(
						/** @type {Schema} */
						(item),
						`${schemaPath}.${i}`,
						fullPath,
						schemaPath,
						`/items/${i}`
					);
				}

				return addedArguments;
			}

			addedArguments += traverse(
				/** @type {Schema} */
				(schemaPart.items),
				`${schemaPath}[]`,
				fullPath,
				schemaPath,
				"/items"
			);

			if (addedArguments > 0) {
				addResetFlag(fullPath);
				addedArguments++;
			}

			return addedArguments;
		}

		const ofKey = schemaPart.oneOf
			? "oneOf"
			: schemaPart.anyOf
				? "anyOf"
				: schemaPart.allOf
					? "allOf"
					: undefined;

		if (ofKey) {
			const items = /** @type {Schema[]} */ (schemaPart[ofKey]);

			for (let i = 0; i < items.length; i++) {
				addedArguments += traverse(
					/** @type {Schema} */
					(items[i]),
					schemaPath,
					fullPath,
					inArray,
					`/${ofKey}/${i}`
				);
			}

			return addedArguments;
		}

		return addedArguments;
	};

	traverse(schema);

	// Summarize flags
	for (const name of Object.keys(flags)) {
		/** @type {Argument} */
		const argument = flags[name];
		argument.description = argument.configs.reduce((desc, { description }) => {
			if (!desc) return description;
			if (!description) return desc;
			if (desc.includes(description)) return desc;
			return `${desc} ${description}`;
		}, /** @type {string | undefined} */ (undefined));
		argument.simpleType =
			/** @type {SimpleType} */
			(
				argument.configs.reduce((t, argConfig) => {
					/** @type {SimpleType} */
					let type = "string";
					switch (argConfig.type) {
						case "number":
							type = "number";
							break;
						case "reset":
						case "boolean":
							type = "boolean";
							break;
						case "enum": {
							const values =
								/** @type {NonNullable<ArgumentConfig["values"]>} */
								(argConfig.values);

							if (values.every((v) => typeof v === "boolean")) type = "boolean";
							if (values.every((v) => typeof v === "number")) type = "number";
							break;
						}
					}
					if (t === undefined) return type;
					return t === type ? t : "string";
				}, /** @type {SimpleType | undefined} */ (undefined))
			);
		argument.multiple = argument.configs.some((c) => c.multiple);
	}

	return flags;
};

/** @type {WeakMap<EXPECTED_OBJECT, number>} */
const cliAddedItems = new WeakMap();

/** @typedef {string | number} Property */

/**
 * Whether a path segment would walk into the prototype chain.
 * @param {string} name path segment
 * @returns {boolean} true when the segment is unsafe to write through
 */
const isUnsafeKey = (name) =>
	name === "__proto__" || name === "constructor" || name === "prototype";

/**
 * Gets object and property.
 * @param {ObjectConfiguration} config configuration
 * @param {string} schemaPath path in the config
 * @param {number | undefined} index index of value when multiple values are provided, otherwise undefined
 * @returns {{ problem?: LocalProblem, object?: ObjectConfiguration, property?: Property, value?: EXPECTED_OBJECT | EXPECTED_ANY[] }} problem or object with property and value
 */
const getObjectAndProperty = (config, schemaPath, index = 0) => {
	if (!schemaPath) return { value: config };
	const parts = schemaPath.split(".");
	const property = /** @type {string} */ (parts.pop());
	let current = config;
	let i = 0;
	for (const part of parts) {
		const isArray = part.endsWith("[]");
		const name = isArray ? part.slice(0, -2) : part;
		if (isUnsafeKey(name)) {
			return {
				problem: {
					type: "prototype-pollution-in-path",
					path: parts.slice(0, i).join(".")
				}
			};
		}
		let value = current[name];
		if (isArray) {
			if (value === undefined) {
				value = {};
				current[name] = [...Array.from({ length: index }), value];
				cliAddedItems.set(current[name], index + 1);
			} else if (!Array.isArray(value)) {
				return {
					problem: {
						type: "unexpected-non-array-in-path",
						path: parts.slice(0, i).join(".")
					}
				};
			} else {
				let addedItems = cliAddedItems.get(value) || 0;
				while (addedItems <= index) {
					value.push(undefined);
					addedItems++;
				}
				cliAddedItems.set(value, addedItems);
				const x = value.length - addedItems + index;
				if (value[x] === undefined) {
					value[x] = {};
				} else if (value[x] === null || typeof value[x] !== "object") {
					return {
						problem: {
							type: "unexpected-non-object-in-path",
							path: parts.slice(0, i).join(".")
						}
					};
				}
				value = value[x];
			}
		} else if (value === undefined) {
			value = current[name] = {};
		} else if (value === null || typeof value !== "object") {
			return {
				problem: {
					type: "unexpected-non-object-in-path",
					path: parts.slice(0, i).join(".")
				}
			};
		}
		current = value;
		i++;
	}
	if (isUnsafeKey(property.endsWith("[]") ? property.slice(0, -2) : property)) {
		return {
			problem: {
				type: "prototype-pollution-in-path",
				path: parts.join(".")
			}
		};
	}
	const value = current[property];
	if (property.endsWith("[]")) {
		const name = property.slice(0, -2);
		const value = current[name];
		if (value === undefined) {
			current[name] = [...Array.from({ length: index }), undefined];
			cliAddedItems.set(current[name], index + 1);
			return { object: current[name], property: index, value: undefined };
		} else if (!Array.isArray(value)) {
			current[name] = [value, ...Array.from({ length: index }), undefined];
			cliAddedItems.set(current[name], index + 1);
			return { object: current[name], property: index + 1, value: undefined };
		}
		let addedItems = cliAddedItems.get(value) || 0;
		while (addedItems <= index) {
			value.push(undefined);
			addedItems++;
		}
		cliAddedItems.set(value, addedItems);
		const x = value.length - addedItems + index;
		if (value[x] === undefined) {
			value[x] = {};
		} else if (value[x] === null || typeof value[x] !== "object") {
			return {
				problem: {
					type: "unexpected-non-object-in-path",
					path: schemaPath
				}
			};
		}
		return {
			object: value,
			property: x,
			value: value[x]
		};
	}
	return { object: current, property, value };
};

/**
 * Updates value using the provided config.
 * @param {ObjectConfiguration} config configuration
 * @param {string} schemaPath path in the config
 * @param {ParsedValue} value parsed value
 * @param {number | undefined} index index of value when multiple values are provided, otherwise undefined
 * @returns {LocalProblem | null} problem or null for success
 */
const setValue = (config, schemaPath, value, index) => {
	const { problem, object, property } = getObjectAndProperty(
		config,
		schemaPath,
		index
	);
	if (problem) return problem;
	/** @type {ObjectConfiguration} */
	(object)[/** @type {Property} */ (property)] = value;
	return null;
};

/**
 * Process argument config.
 * @param {ArgumentConfig} argConfig processing instructions
 * @param {ObjectConfiguration} config configuration
 * @param {Value} value the value
 * @param {number | undefined} index the index if multiple values provided
 * @returns {LocalProblem | null} a problem if any
 */
const processArgumentConfig = (argConfig, config, value, index) => {
	if (index !== undefined && !argConfig.multiple) {
		return {
			type: "multiple-values-unexpected",
			path: argConfig.path
		};
	}
	const parsed = parseValueForArgumentConfig(argConfig, value);
	if (parsed === undefined) {
		return {
			type: "invalid-value",
			path: argConfig.path,
			expected: getExpectedValue(argConfig)
		};
	}
	const problem = setValue(config, argConfig.path, parsed, index);
	if (problem) return problem;
	return null;
};

/**
 * Gets expected value.
 * @param {ArgumentConfig} argConfig processing instructions
 * @returns {string | undefined} expected message
 */
const getExpectedValue = (argConfig) => {
	switch (argConfig.type) {
		case "boolean":
			return "true | false";
		case "RegExp":
			return "regular expression (example: /ab?c*/)";
		case "enum":
			return /** @type {NonNullable<ArgumentConfig["values"]>} */ (
				argConfig.values
			)
				.map((v) => `${v}`)
				.join(" | ");
		case "reset":
			return "true (will reset the previous value to an empty array)";
		default:
			return argConfig.type;
	}
};

/** @typedef {null | string | number | boolean | RegExp | EnumValue | []} ParsedValue */

const DECIMAL_NUMBER_REGEXP = /^[+-]?(?:\d+\.?\d*|\.\d+)(?:e[+-]?\d+)?$/i;

/**
 * Parses value for argument config.
 * @param {ArgumentConfig} argConfig processing instructions
 * @param {Value} value the value
 * @returns {ParsedValue | undefined} parsed value
 */
const parseValueForArgumentConfig = (argConfig, value) => {
	switch (argConfig.type) {
		case "string":
			if (typeof value === "string") {
				return value;
			}
			break;
		case "path":
			if (typeof value === "string") {
				return path.resolve(value);
			}
			break;
		case "number":
			if (typeof value === "number") return value;
			if (typeof value === "string" && DECIMAL_NUMBER_REGEXP.test(value)) {
				const n = Number(value);
				if (!Number.isNaN(n)) return n;
			}
			break;
		case "boolean":
			if (typeof value === "boolean") return value;
			if (value === "true") return true;
			if (value === "false") return false;
			break;
		case "RegExp":
			if (value instanceof RegExp) return value;
			if (typeof value === "string") {
				// cspell:word yugi
				const match = /^\/(.*)\/([yugi]*)$/.exec(value);
				if (match && !/[^\\]\//.test(match[1])) {
					return new RegExp(match[1], match[2]);
				}
			}
			break;
		case "enum": {
			const values =
				/** @type {EnumValue[]} */
				(argConfig.values);
			if (values.includes(/** @type {Exclude<Value, RegExp>} */ (value))) {
				return value;
			}
			for (const item of values) {
				if (`${item}` === value) return item;
			}
			break;
		}
		case "reset":
			if (value === true) return [];
			break;
	}
};

/** @typedef {Record<string, Value[]>} Values */

/**
 * Processes the provided arg.
 * @param {Flags} args object of arguments
 * @param {ObjectConfiguration} config configuration
 * @param {Values} values object with values
 * @returns {Problem[] | null} problems or null for success
 */
const processArguments = (args, config, values) => {
	/** @type {Problem[]} */
	const problems = [];
	for (const key of Object.keys(values)) {
		const arg = args[key];
		if (!arg) {
			problems.push({
				type: "unknown-argument",
				path: "",
				argument: key
			});
			continue;
		}
		/**
		 * Processes the provided value.
		 * @param {Value} value value
		 * @param {number | undefined} i index
		 */
		const processValue = (value, i) => {
			/** @type {Problem[]} */
			const currentProblems = [];
			for (const argConfig of arg.configs) {
				const problem = processArgumentConfig(argConfig, config, value, i);
				if (!problem) {
					return;
				}
				currentProblems.push({
					...problem,
					argument: key,
					value,
					index: i
				});
			}
			problems.push(...currentProblems);
		};
		const value = values[key];
		if (Array.isArray(value)) {
			for (let i = 0; i < value.length; i++) {
				processValue(value[i], i);
			}
		} else {
			processValue(value, undefined);
		}
	}
	if (problems.length === 0) return null;
	return problems;
};

/**
 * Checks whether this object is color supported.
 * @returns {boolean} true when colors supported, otherwise false
 */
const isColorSupported = () => {
	const { env = {}, argv = [], platform = "" } = process;

	// Read values instead of using `in`: Deno's and Bun's `process.env` honor
	// property access but not the `in`/`has` trap, so `"X" in env` is unreliable.
	const isDisabled = env.NO_COLOR !== undefined || argv.includes("--no-color");
	const isForced = env.FORCE_COLOR !== undefined || argv.includes("--color");
	const isWindows = platform === "win32";
	const isDumbTerminal = env.TERM === "dumb";

	const isCompatibleTerminal = tty.isatty(1) && env.TERM && !isDumbTerminal;

	const isCI =
		env.CI !== undefined &&
		(env.GITHUB_ACTIONS !== undefined ||
			env.GITLAB_CI !== undefined ||
			env.CIRCLECI !== undefined);

	return (
		!isDisabled &&
		(isForced || (isWindows && !isDumbTerminal) || isCompatibleTerminal || isCI)
	);
};

/**
 * Returns result.
 * @param {number} index index
 * @param {string} string string
 * @param {string} close close
 * @param {string=} replace replace
 * @param {string=} head head
 * @param {string=} tail tail
 * @param {number=} next next
 * @returns {string} result
 */
const replaceClose = (
	index,
	string,
	close,
	replace,
	head = string.slice(0, Math.max(0, index)) + replace,
	tail = string.slice(Math.max(0, index + close.length)),
	next = tail.indexOf(close)
) => head + (next < 0 ? tail : replaceClose(next, tail, close, replace));

/**
 * Returns result.
 * @param {number} index index to replace
 * @param {string} string string
 * @param {string} open open string
 * @param {string} close close string
 * @param {string=} replace extra replace
 * @returns {string} result
 */
const clearBleed = (index, string, open, close, replace) =>
	index < 0
		? open + string + close
		: open + replaceClose(index, string, close, replace) + close;

/** @typedef {(value: EXPECTED_ANY) => string} PrintFunction */

/**
 * Returns function to create color.
 * @param {string} open open string
 * @param {string} close close string
 * @param {string=} replace extra replace
 * @param {number=} at at
 * @returns {PrintFunction} function to create color
 */
const filterEmpty =
	(open, close, replace = open, at = open.length + 1) =>
	(string) =>
		string || !(string === "" || string === undefined)
			? clearBleed(`${string}`.indexOf(close, at), string, open, close, replace)
			: "";

/**
 * Returns result.
 * @param {number} open open code
 * @param {number} close close code
 * @param {string=} replace extra replace
 * @returns {PrintFunction} result
 */
const init = (open, close, replace) =>
	filterEmpty(`\u001B[${open}m`, `\u001B[${close}m`, replace);

/**
 * Defines the colors type used by this module.
 * @typedef {{ reset: PrintFunction, bold: PrintFunction, dim: PrintFunction, italic: PrintFunction, underline: PrintFunction, inverse: PrintFunction, hidden: PrintFunction, strikethrough: PrintFunction, black: PrintFunction, red: PrintFunction, green: PrintFunction, yellow: PrintFunction, blue: PrintFunction, magenta: PrintFunction, cyan: PrintFunction, white: PrintFunction, gray: PrintFunction, bgBlack: PrintFunction, bgRed: PrintFunction, bgGreen: PrintFunction, bgYellow: PrintFunction, bgBlue: PrintFunction, bgMagenta: PrintFunction, bgCyan: PrintFunction, bgWhite: PrintFunction, blackBright: PrintFunction, redBright: PrintFunction, greenBright: PrintFunction, yellowBright: PrintFunction, blueBright: PrintFunction, magentaBright: PrintFunction, cyanBright: PrintFunction, whiteBright: PrintFunction, bgBlackBright: PrintFunction, bgRedBright: PrintFunction, bgGreenBright: PrintFunction, bgYellowBright: PrintFunction, bgBlueBright: PrintFunction, bgMagentaBright: PrintFunction, bgCyanBright: PrintFunction, bgWhiteBright: PrintFunction }} Colors
 */

/**
 * Defines the colors options type used by this module.
 * @typedef {object} ColorsOptions
 * @property {boolean=} useColor force use colors
 */

/**
 * Creates a colors from the provided colors option.
 * @param {ColorsOptions=} options options
 * @returns {Colors} colors
 */
const createColors = ({ useColor = isColorSupported() } = {}) => ({
	reset: useColor ? init(0, 0) : String,
	bold: useColor ? init(1, 22, "\u001B[22m\u001B[1m") : String,
	dim: useColor ? init(2, 22, "\u001B[22m\u001B[2m") : String,
	italic: useColor ? init(3, 23) : String,
	underline: useColor ? init(4, 24) : String,
	inverse: useColor ? init(7, 27) : String,
	hidden: useColor ? init(8, 28) : String,
	strikethrough: useColor ? init(9, 29) : String,
	black: useColor ? init(30, 39) : String,
	red: useColor ? init(31, 39) : String,
	green: useColor ? init(32, 39) : String,
	yellow: useColor ? init(33, 39) : String,
	blue: useColor ? init(34, 39) : String,
	magenta: useColor ? init(35, 39) : String,
	cyan: useColor ? init(36, 39) : String,
	white: useColor ? init(37, 39) : String,
	gray: useColor ? init(90, 39) : String,
	bgBlack: useColor ? init(40, 49) : String,
	bgRed: useColor ? init(41, 49) : String,
	bgGreen: useColor ? init(42, 49) : String,
	bgYellow: useColor ? init(43, 49) : String,
	bgBlue: useColor ? init(44, 49) : String,
	bgMagenta: useColor ? init(45, 49) : String,
	bgCyan: useColor ? init(46, 49) : String,
	bgWhite: useColor ? init(47, 49) : String,
	blackBright: useColor ? init(90, 39) : String,
	redBright: useColor ? init(91, 39) : String,
	greenBright: useColor ? init(92, 39) : String,
	yellowBright: useColor ? init(93, 39) : String,
	blueBright: useColor ? init(94, 39) : String,
	magentaBright: useColor ? init(95, 39) : String,
	cyanBright: useColor ? init(96, 39) : String,
	whiteBright: useColor ? init(97, 39) : String,
	bgBlackBright: useColor ? init(100, 49) : String,
	bgRedBright: useColor ? init(101, 49) : String,
	bgGreenBright: useColor ? init(102, 49) : String,
	bgYellowBright: useColor ? init(103, 49) : String,
	bgBlueBright: useColor ? init(104, 49) : String,
	bgMagentaBright: useColor ? init(105, 49) : String,
	bgCyanBright: useColor ? init(106, 49) : String,
	bgWhiteBright: useColor ? init(107, 49) : String
});

module.exports.createColors = createColors;
module.exports.getArguments = getArguments;
module.exports.isColorSupported = isColorSupported;
module.exports.processArguments = processArguments;