normalize

normalize(colorConfig?): undefined | Partial<ColorConfig>

Convert a user-supplied color configuration into a set of ready-to-use colorizer functions, so the printer can apply colors without having to re-check types or re-parse strings every time.

• If you pass strings like "red bold", they’re parsed once into functions.
• If you pass functions directly, they’re used as-is.
• Keys without a value are skipped.

Parameters

colorConfig?

Partial<ColorConfig>

An object whose values are either style strings (e.g. "cyan underline") or existing Colorizer functions.

Returns

undefined | Partial<ColorConfig>

A new object where each key maps to a Colorizer function, or undefined if no config was provided.

Example

// User gives style strings and a function
const userSpec = {
  error: 'red bold',
  info: 'green',
};

// normalize() turns both into functions:
const norm = normalize(userSpec);
console.log(typeof norm.error); // "function"
console.log(typeof norm.info);  // "function"

// Printer can now do:
console.log(norm.error('Oops!')); // bold red text