options.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
/** @template T @typedef {(string | Record<string, string | string[] | T>)[] | Record<string, string | string[] | T>} ContainerOptionsFormat */
/**
* @template T
* @template N
* @param {ContainerOptionsFormat<T>} options options passed by the user
* @param {function(string | string[], string) : N} normalizeSimple normalize a simple item
* @param {function(T, string) : N} normalizeOptions normalize a complex item
* @param {function(string, N): void} fn processing function
* @returns {void}
*/
const process = (options, normalizeSimple, normalizeOptions, fn) => {
const array = items => {
for (const item of items) {
if (typeof item === "string") {
fn(item, normalizeSimple(item, item));
} else if (item && typeof item === "object") {
object(item);
} else {
throw new Error("Unexpected options format");
}
}
};
const object = obj => {
for (const [key, value] of Object.entries(obj)) {
if (typeof value === "string" || Array.isArray(value)) {
fn(key, normalizeSimple(value, key));
} else {
fn(key, normalizeOptions(value, key));
}
}
};
if (!options) {
return;
} else if (Array.isArray(options)) {
array(options);
} else if (typeof options === "object") {
object(options);
} else {
throw new Error("Unexpected options format");
}
};
/**
* @template T
* @template R
* @param {ContainerOptionsFormat<T>} options options passed by the user
* @param {function(string | string[], string) : R} normalizeSimple normalize a simple item
* @param {function(T, string) : R} normalizeOptions normalize a complex item
* @returns {[string, R][]} parsed options
*/
const parseOptions = (options, normalizeSimple, normalizeOptions) => {
/** @type {[string, R][]} */
const items = [];
process(options, normalizeSimple, normalizeOptions, (key, value) => {
items.push([key, value]);
});
return items;
};
/**
* @template T
* @param {string} scope scope name
* @param {ContainerOptionsFormat<T>} options options passed by the user
* @returns {Record<string, string | string[] | T>} options to spread or pass
*/
const scope = (scope, options) => {
/** @type {Record<string, string | string[] | T>} */
const obj = {};
process(
options,
item => /** @type {string | string[] | T} */ (item),
item => /** @type {string | string[] | T} */ (item),
(key, value) => {
obj[
key.startsWith("./") ? `${scope}${key.slice(1)}` : `${scope}/${key}`
] = value;
}
);
return obj;
};
exports.parseOptions = parseOptions;
exports.scope = scope;