@technobuddha/library
Version:
A large library of useful functions
43 lines • 3.3 kB
JavaScript
import { cardinalOnes, cardinalTens } from "../constants.js";
import { space } from "../unicode.js";
const ZERO = 0;
const TEN = 10;
const TWENTY = 20;
const ONE_HUNDRED = 100;
/**
* Converts a number less than 1000 into its English words representation as an array of strings.
* @param input - The number to convert (should be in the range 0 to 999).
* @param options - An object specifying formatting options:
* - and: A string to insert between hundreds and the remainder (e.g., "and" in "one hundred and one").
* - hyphen: A string to use as a hyphen between tens and ones (defaults to a space).
* @returns An array of strings representing the number in words.
* @example
* ```typescript
* hundreds(342, \{ and: "and", hyphen: "-" \}); // ["three", "hundred", "and", "forty-two"]
* ```
* @internal
*/
export function hundreds(input, { and, hyphen = space }) {
let numInput = input;
const words = [];
if (numInput >= ONE_HUNDRED) {
words.push(cardinalOnes[Math.floor(numInput / ONE_HUNDRED)], 'hundred');
numInput %= ONE_HUNDRED;
if (and && numInput > ZERO) {
words.push(and);
}
}
if (numInput > ZERO) {
if (numInput < TWENTY) {
words.push(cardinalOnes[numInput]);
}
else if (numInput % TEN === ZERO) {
words.push(cardinalTens[Math.floor(numInput / TEN) - 2]);
}
else {
words.push(cardinalTens[Math.floor(numInput / TEN) - 2] + hyphen + cardinalOnes[numInput % TEN]);
}
}
return words;
}
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