to-case.ts

import { TargetCaseType } from "@commitlint/types";
import camelCase from "lodash.camelcase";
import kebabCase from "lodash.kebabcase";
import snakeCase from "lodash.snakecase";
import upperFirst from "lodash.upperfirst";
import startCase from "lodash.startcase";

export default function toCase(input: string, target: TargetCaseType): string {
	switch (target) {
		case "camel-case":
			return camelCase(input);
		case "kebab-case":
			return kebabCase(input);
		case "snake-case":
			return snakeCase(input);
		case "pascal-case":
			return upperFirst(camelCase(input));
		case "start-case":
			return startCase(input);
		case "upper-case":
		case "uppercase":
			return input.toUpperCase();
		case "sentence-case":
		case "sentencecase":
			return upperFirst(input);
		case "lower-case":
		case "lowercase":
		case "lowerCase": // Backwards compat config-angular v4
			return input.toLowerCase();
		default:
			throw new TypeError(`to-case: Unknown target case "${target}"`);
	}
}