source: imaps-frontend/node_modules/chalk/source/index.js

'use strict';
const ansiStyles = require('ansi-styles');
const {stdout: stdoutColor, stderr: stderrColor} = require('supports-color');
const {
        stringReplaceAll,
        stringEncaseCRLFWithFirstIndex
} = require('./util');

const {isArray} = Array;

// `supportsColor.level` → `ansiStyles.color[name]` mapping
const levelMapping = [
        'ansi',
        'ansi',
        'ansi256',
        'ansi16m'
];

const styles = Object.create(null);

const applyOptions = (object, options = {}) => {
        if (options.level && !(Number.isInteger(options.level) && options.level >= 0 && options.level <= 3)) {
                throw new Error('The `level` option should be an integer from 0 to 3');
        }

        // Detect level if not set manually
        const colorLevel = stdoutColor ? stdoutColor.level : 0;
        object.level = options.level === undefined ? colorLevel : options.level;
};

class ChalkClass {
        constructor(options) {
                // eslint-disable-next-line no-constructor-return
                return chalkFactory(options);
        }
}

const chalkFactory = options => {
        const chalk = {};
        applyOptions(chalk, options);

        chalk.template = (...arguments_) => chalkTag(chalk.template, ...arguments_);

        Object.setPrototypeOf(chalk, Chalk.prototype);
        Object.setPrototypeOf(chalk.template, chalk);

        chalk.template.constructor = () => {
                throw new Error('`chalk.constructor()` is deprecated. Use `new chalk.Instance()` instead.');
        };

        chalk.template.Instance = ChalkClass;

        return chalk.template;
};

function Chalk(options) {
        return chalkFactory(options);
}

for (const [styleName, style] of Object.entries(ansiStyles)) {
        styles[styleName] = {
                get() {
                        const builder = createBuilder(this, createStyler(style.open, style.close, this._styler), this._isEmpty);
                        Object.defineProperty(this, styleName, {value: builder});
                        return builder;
                }
        };
}

styles.visible = {
        get() {
                const builder = createBuilder(this, this._styler, true);
                Object.defineProperty(this, 'visible', {value: builder});
                return builder;
        }
};

const usedModels = ['rgb', 'hex', 'keyword', 'hsl', 'hsv', 'hwb', 'ansi', 'ansi256'];

for (const model of usedModels) {
        styles[model] = {
                get() {
                        const {level} = this;
                        return function (...arguments_) {
                                const styler = createStyler(ansiStyles.color[levelMapping[level]][model](...arguments_), ansiStyles.color.close, this._styler);
                                return createBuilder(this, styler, this._isEmpty);
                        };
                }
        };
}

for (const model of usedModels) {
        const bgModel = 'bg' + model[0].toUpperCase() + model.slice(1);
        styles[bgModel] = {
                get() {
                        const {level} = this;
                        return function (...arguments_) {
                                const styler = createStyler(ansiStyles.bgColor[levelMapping[level]][model](...arguments_), ansiStyles.bgColor.close, this._styler);
                                return createBuilder(this, styler, this._isEmpty);
                        };
                }
        };
}

const proto = Object.defineProperties(() => {}, {
        ...styles,
        level: {
                enumerable: true,
                get() {
                        return this._generator.level;
                },
                set(level) {
                        this._generator.level = level;
                }
        }
});

const createStyler = (open, close, parent) => {
        let openAll;
        let closeAll;
        if (parent === undefined) {
                openAll = open;
                closeAll = close;
        } else {
                openAll = parent.openAll + open;
                closeAll = close + parent.closeAll;
        }

        return {
                open,
                close,
                openAll,
                closeAll,
                parent
        };
};

const createBuilder = (self, _styler, _isEmpty) => {
        const builder = (...arguments_) => {
                if (isArray(arguments_[0]) && isArray(arguments_[0].raw)) {
                        // Called as a template literal, for example: chalk.red`2 + 3 = {bold ${2+3}}`
                        return applyStyle(builder, chalkTag(builder, ...arguments_));
                }

                // Single argument is hot path, implicit coercion is faster than anything
                // eslint-disable-next-line no-implicit-coercion
                return applyStyle(builder, (arguments_.length === 1) ? ('' + arguments_[0]) : arguments_.join(' '));
        };

        // We alter the prototype because we must return a function, but there is
        // no way to create a function with a different prototype
        Object.setPrototypeOf(builder, proto);

        builder._generator = self;
        builder._styler = _styler;
        builder._isEmpty = _isEmpty;

        return builder;
};

const applyStyle = (self, string) => {
        if (self.level <= 0 || !string) {
                return self._isEmpty ? '' : string;
        }

        let styler = self._styler;

        if (styler === undefined) {
                return string;
        }

        const {openAll, closeAll} = styler;
        if (string.indexOf('\u001B') !== -1) {
                while (styler !== undefined) {
                        // Replace any instances already present with a re-opening code
                        // otherwise only the part of the string until said closing code
                        // will be colored, and the rest will simply be 'plain'.
                        string = stringReplaceAll(string, styler.close, styler.open);

                        styler = styler.parent;
                }
        }

        // We can move both next actions out of loop, because remaining actions in loop won't have
        // any/visible effect on parts we add here. Close the styling before a linebreak and reopen
        // after next line to fix a bleed issue on macOS: https://github.com/chalk/chalk/pull/92
        const lfIndex = string.indexOf('\n');
        if (lfIndex !== -1) {
                string = stringEncaseCRLFWithFirstIndex(string, closeAll, openAll, lfIndex);
        }

        return openAll + string + closeAll;
};

let template;
const chalkTag = (chalk, ...strings) => {
        const [firstString] = strings;

        if (!isArray(firstString) || !isArray(firstString.raw)) {
                // If chalk() was called by itself or with a string,
                // return the string itself as a string.
                return strings.join(' ');
        }

        const arguments_ = strings.slice(1);
        const parts = [firstString.raw[0]];

        for (let i = 1; i < firstString.length; i++) {
                parts.push(
                        String(arguments_[i - 1]).replace(/[{}\\]/g, '\\$&'),
                        String(firstString.raw[i])
                );
        }

        if (template === undefined) {
                template = require('./templates');
        }

        return template(chalk, parts.join(''));
};

Object.defineProperties(Chalk.prototype, styles);

const chalk = Chalk(); // eslint-disable-line new-cap
chalk.supportsColor = stdoutColor;
chalk.stderr = Chalk({level: stderrColor ? stderrColor.level : 0}); // eslint-disable-line new-cap
chalk.stderr.supportsColor = stderrColor;

module.exports = chalk;