Generate chalk.flow using flowgen

```
npm i -g flowgen
flowgen ./node_modules/chalk/index.d.ts -o ./flow-libs/chalk.flow
```

flow-libs/chalk.flow

@@ -0,0 +1,391 @@
+/**
+ * Flowtype definitions for index
+ * Generated by Flowgen from a Typescript Definition
+ * Flowgen v1.13.0
+ */
+
+/**
+ * Basic foreground colors.
+ *
+ * [More colors here.](https://github.com/chalk/chalk/blob/master/readme.md#256-and-truecolor-color-support)
+ */
+declare type ForegroundColor =
+  | "black"
+  | "red"
+  | "green"
+  | "yellow"
+  | "blue"
+  | "magenta"
+  | "cyan"
+  | "white"
+  | "gray"
+  | "grey"
+  | "blackBright"
+  | "redBright"
+  | "greenBright"
+  | "yellowBright"
+  | "blueBright"
+  | "magentaBright"
+  | "cyanBright"
+  | "whiteBright";
+/**
+ * Basic background colors.
+ *
+ * [More colors here.](https://github.com/chalk/chalk/blob/master/readme.md#256-and-truecolor-color-support)
+ */
+declare type BackgroundColor =
+  | "bgBlack"
+  | "bgRed"
+  | "bgGreen"
+  | "bgYellow"
+  | "bgBlue"
+  | "bgMagenta"
+  | "bgCyan"
+  | "bgWhite"
+  | "bgGray"
+  | "bgGrey"
+  | "bgBlackBright"
+  | "bgRedBright"
+  | "bgGreenBright"
+  | "bgYellowBright"
+  | "bgBlueBright"
+  | "bgMagentaBright"
+  | "bgCyanBright"
+  | "bgWhiteBright";
+/**
+ * Basic colors.
+ *
+ * [More colors here.](https://github.com/chalk/chalk/blob/master/readme.md#256-and-truecolor-color-support)
+ */
+declare type Color = ForegroundColor | BackgroundColor;
+declare type Modifiers =
+  | "reset"
+  | "bold"
+  | "dim"
+  | "italic"
+  | "underline"
+  | "inverse"
+  | "hidden"
+  | "strikethrough"
+  | "visible";
+declare var chalk: typeof npm$namespace$chalk;
+
+declare var npm$namespace$chalk: {|
+  Options: Class<chalk$Options>,
+  ColorSupport: Class<chalk$ColorSupport>,
+  ChalkFunction: Class<chalk$ChalkFunction>,
+  Chalk: Class<chalk$Chalk>,
+|};
+
+/**
+ * Levels:
+ * - `0` - All colors disabled.
+ * - `1` - Basic 16 colors support.
+ * - `2` - ANSI 256 colors support.
+ * - `3` - Truecolor 16 million colors support.
+ */
+declare type chalk$Level = 0 | 1 | 2 | 3;
+
+declare interface chalk$Options {
+  /**
+   * Specify the color support for Chalk.
+   *
+   * By default, color support is automatically detected based on the environment.
+   *
+   * Levels:
+   * - `0` - All colors disabled.
+   * - `1` - Basic 16 colors support.
+   * - `2` - ANSI 256 colors support.
+   * - `3` - Truecolor 16 million colors support.
+   */
+  level?: chalk$Level;
+}
+
+/**
+ * Return a new Chalk instance.
+ */
+declare type chalk$Instance = (options?: chalk$Options) => chalk$Chalk;
+
+/**
+ * Detect whether the terminal supports color.
+ */
+declare interface chalk$ColorSupport {
+  /**
+   * The color level used by Chalk.
+   */
+  level: chalk$Level;
+
+  /**
+   * Return whether Chalk supports basic 16 colors.
+   */
+  hasBasic: boolean;
+
+  /**
+   * Return whether Chalk supports ANSI 256 colors.
+   */
+  has256: boolean;
+
+  /**
+   * Return whether Chalk supports Truecolor 16 million colors.
+   */
+  has16m: boolean;
+}
+
+declare interface chalk$ChalkFunction {
+  /**
+   * Use a template string.
+   * @remarks Template literals are unsupported for nested calls (see [issue #341](https://github.com/chalk/chalk/issues/341))
+   * @example ```
+   * import chalk = require('chalk');
+   *
+   * log(chalk`
+   * CPU: {red ${cpu.totalPercent}%}
+   * RAM: {green ${ram.used / ram.total * 100}%}
+   * DISK: {rgb(255,131,0) ${disk.used / disk.total * 100}%}
+   * `);
+   * ```
+   * @example ```
+   * import chalk = require('chalk');
+   *
+   * log(chalk.red.bgBlack`2 + 3 = {bold ${2 + 3}}`)
+   * ```
+   */
+  (text: TemplateStringsArray, ...placeholders: mixed[]): string;
+  (...text: mixed[]): string;
+}
+
+declare type chalk$Chalk = {
+  /**
+   * Return a new Chalk instance.
+   */
+  Instance: chalk$Instance,
+
+  /**
+   * The color support for Chalk.
+   *
+   * By default, color support is automatically detected based on the environment.
+   *
+   * Levels:
+   * - `0` - All colors disabled.
+   * - `1` - Basic 16 colors support.
+   * - `2` - ANSI 256 colors support.
+   * - `3` - Truecolor 16 million colors support.
+   */
+  level: chalk$Level,
+
+  /**
+   * Use HEX value to set text color.
+   * @param color - Hexadecimal value representing the desired color.
+   * @example ```
+   * import chalk = require('chalk');
+   *
+   * chalk.hex('#DEADED');
+   * ```
+   */
+  hex(color: string): chalk$Chalk,
+
+  /**
+   * Use keyword color value to set text color.
+   * @param color - Keyword value representing the desired color.
+   * @example ```
+   * import chalk = require('chalk');
+   *
+   * chalk.keyword('orange');
+   * ```
+   */
+  keyword(color: string): chalk$Chalk,
+
+  /**
+   * Use RGB values to set text color.
+   */
+  rgb(red: number, green: number, blue: number): chalk$Chalk,
+
+  /**
+   * Use HSL values to set text color.
+   */
+  hsl(hue: number, saturation: number, lightness: number): chalk$Chalk,
+
+  /**
+   * Use HSV values to set text color.
+   */
+  hsv(hue: number, saturation: number, value: number): chalk$Chalk,
+
+  /**
+   * Use HWB values to set text color.
+   */
+  hwb(hue: number, whiteness: number, blackness: number): chalk$Chalk,
+
+  /**
+   * Use a [Select/Set Graphic Rendition](https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters) (SGR) [color code number](https://en.wikipedia.org/wiki/ANSI_escape_code#3/4_bit) to set text color.
+   *
+   * 30 <= code && code < 38 || 90 <= code && code < 98
+   * For example, 31 for red, 91 for redBright.
+   */
+  ansi(code: number): chalk$Chalk,
+
+  /**
+   * Use a [8-bit unsigned number](https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit) to set text color.
+   */
+  ansi256(index: number): chalk$Chalk,
+
+  /**
+   * Use HEX value to set background color.
+   * @param color - Hexadecimal value representing the desired color.
+   * @example ```
+   * import chalk = require('chalk');
+   *
+   * chalk.bgHex('#DEADED');
+   * ```
+   */
+  bgHex(color: string): chalk$Chalk,
+
+  /**
+   * Use keyword color value to set background color.
+   * @param color - Keyword value representing the desired color.
+   * @example ```
+   * import chalk = require('chalk');
+   *
+   * chalk.bgKeyword('orange');
+   * ```
+   */
+  bgKeyword(color: string): chalk$Chalk,
+
+  /**
+   * Use RGB values to set background color.
+   */
+  bgRgb(red: number, green: number, blue: number): chalk$Chalk,
+
+  /**
+   * Use HSL values to set background color.
+   */
+  bgHsl(hue: number, saturation: number, lightness: number): chalk$Chalk,
+
+  /**
+   * Use HSV values to set background color.
+   */
+  bgHsv(hue: number, saturation: number, value: number): chalk$Chalk,
+
+  /**
+   * Use HWB values to set background color.
+   */
+  bgHwb(hue: number, whiteness: number, blackness: number): chalk$Chalk,
+
+  /**
+   * Use a [Select/Set Graphic Rendition](https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters) (SGR) [color code number](https://en.wikipedia.org/wiki/ANSI_escape_code#3/4_bit) to set background color.
+   *
+   * 30 <= code && code < 38 || 90 <= code && code < 98
+   * For example, 31 for red, 91 for redBright.
+   * Use the foreground code, not the background code (for example, not 41, nor 101).
+   */
+  bgAnsi(code: number): chalk$Chalk,
+
+  /**
+   * Use a [8-bit unsigned number](https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit) to set background color.
+   */
+  bgAnsi256(index: number): chalk$Chalk,
+
+  /**
+   * Modifier: Resets the current color chain.
+   */
+  +reset: chalk$Chalk,
+
+  /**
+   * Modifier: Make text bold.
+   */
+  +bold: chalk$Chalk,
+
+  /**
+   * Modifier: Emitting only a small amount of light.
+   */
+  +dim: chalk$Chalk,
+
+  /**
+   * Modifier: Make text italic. (Not widely supported)
+   */
+  +italic: chalk$Chalk,
+
+  /**
+   * Modifier: Make text underline. (Not widely supported)
+   */
+  +underline: chalk$Chalk,
+
+  /**
+   * Modifier: Inverse background and foreground colors.
+   */
+  +inverse: chalk$Chalk,
+
+  /**
+   * Modifier: Prints the text, but makes it invisible.
+   */
+  +hidden: chalk$Chalk,
+
+  /**
+   * Modifier: Puts a horizontal line through the center of the text. (Not widely supported)
+   */
+  +strikethrough: chalk$Chalk,
+
+  /**
+   * Modifier: Prints the text only when Chalk has a color support level > 0.
+   * Can be useful for things that are purely cosmetic.
+   */
+  +visible: chalk$Chalk,
+  +black: chalk$Chalk,
+  +red: chalk$Chalk,
+  +green: chalk$Chalk,
+  +yellow: chalk$Chalk,
+  +blue: chalk$Chalk,
+  +magenta: chalk$Chalk,
+  +cyan: chalk$Chalk,
+  +white: chalk$Chalk,
+  +gray: chalk$Chalk,
+  +grey: chalk$Chalk,
+  +blackBright: chalk$Chalk,
+  +redBright: chalk$Chalk,
+  +greenBright: chalk$Chalk,
+  +yellowBright: chalk$Chalk,
+  +blueBright: chalk$Chalk,
+  +magentaBright: chalk$Chalk,
+  +cyanBright: chalk$Chalk,
+  +whiteBright: chalk$Chalk,
+  +bgBlack: chalk$Chalk,
+  +bgRed: chalk$Chalk,
+  +bgGreen: chalk$Chalk,
+  +bgYellow: chalk$Chalk,
+  +bgBlue: chalk$Chalk,
+  +bgMagenta: chalk$Chalk,
+  +bgCyan: chalk$Chalk,
+  +bgWhite: chalk$Chalk,
+  +bgGray: chalk$Chalk,
+  +bgGrey: chalk$Chalk,
+  +bgBlackBright: chalk$Chalk,
+  +bgRedBright: chalk$Chalk,
+  +bgGreenBright: chalk$Chalk,
+  +bgYellowBright: chalk$Chalk,
+  +bgBlueBright: chalk$Chalk,
+  +bgMagentaBright: chalk$Chalk,
+  +bgCyanBright: chalk$Chalk,
+  +bgWhiteBright: chalk$Chalk,
+  ...
+} & chalk$ChalkFunction;
+
+/**
+ * Main Chalk object that allows to chain styles together.
+ * Call the last one as a method with a string argument.
+ * Order doesn't matter, and later styles take precedent in case of a conflict.
+ * This simply means that `chalk.red.yellow.green` is equivalent to `chalk.green`.
+ */
+declare var chalk: chalk$Chalk &
+  chalk$ChalkFunction & {
+    supportsColor: chalk$ColorSupport | false,
+    Level: chalk$Level,
+    Color: Color,
+    ForegroundColor: ForegroundColor,
+    BackgroundColor: BackgroundColor,
+    Modifiers: Modifiers,
+    stderr: chalk$Chalk & {
+      supportsColor: chalk$ColorSupport | false,
+      ...
+    },
+    ...
+  };
+declare module.exports: typeof chalk;