tenebrous-dicebot/api/node_modules/pify/index.js

69 lines
1.6 KiB
JavaScript

'use strict';
const processFn = (fn, options) => function (...args) {
const P = options.promiseModule;
return new P((resolve, reject) => {
if (options.multiArgs) {
args.push((...result) => {
if (options.errorFirst) {
if (result[0]) {
reject(result);
} else {
result.shift();
resolve(result);
}
} else {
resolve(result);
}
});
} else if (options.errorFirst) {
args.push((error, result) => {
if (error) {
reject(error);
} else {
resolve(result);
}
});
} else {
args.push(resolve);
}
fn.apply(this, args);
});
};
module.exports = (input, options) => {
options = Object.assign({
exclude: [/.+(Sync|Stream)$/],
errorFirst: true,
promiseModule: Promise
}, options);
const objType = typeof input;
if (!(input !== null && (objType === 'object' || objType === 'function'))) {
throw new TypeError(`Expected \`input\` to be a \`Function\` or \`Object\`, got \`${input === null ? 'null' : objType}\``);
}
const filter = key => {
const match = pattern => typeof pattern === 'string' ? key === pattern : pattern.test(key);
return options.include ? options.include.some(match) : !options.exclude.some(match);
};
let ret;
if (objType === 'function') {
ret = function (...args) {
return options.excludeMain ? input(...args) : processFn(input, options).apply(this, args);
};
} else {
ret = Object.create(Object.getPrototypeOf(input));
}
for (const key in input) { // eslint-disable-line guard-for-in
const property = input[key];
ret[key] = typeof property === 'function' && filter(key) ? processFn(property, options) : property;
}
return ret;
};