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73 lines
2.0 KiB
73 lines
2.0 KiB
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var thenify = require('thenify') |
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module.exports = thenifyAll |
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thenifyAll.withCallback = withCallback |
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thenifyAll.thenify = thenify |
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/** |
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* Promisifies all the selected functions in an object. |
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* |
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* @param {Object} source the source object for the async functions |
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* @param {Object} [destination] the destination to set all the promisified methods |
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* @param {Array} [methods] an array of method names of `source` |
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* @return {Object} |
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* @api public |
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*/ |
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function thenifyAll(source, destination, methods) { |
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return promisifyAll(source, destination, methods, thenify) |
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} |
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/** |
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* Promisifies all the selected functions in an object and backward compatible with callback. |
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* |
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* @param {Object} source the source object for the async functions |
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* @param {Object} [destination] the destination to set all the promisified methods |
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* @param {Array} [methods] an array of method names of `source` |
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* @return {Object} |
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* @api public |
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*/ |
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function withCallback(source, destination, methods) { |
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return promisifyAll(source, destination, methods, thenify.withCallback) |
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} |
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function promisifyAll(source, destination, methods, promisify) { |
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if (!destination) { |
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destination = {}; |
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methods = Object.keys(source) |
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} |
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if (Array.isArray(destination)) { |
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methods = destination |
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destination = {} |
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} |
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if (!methods) { |
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methods = Object.keys(source) |
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} |
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if (typeof source === 'function') destination = promisify(source) |
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methods.forEach(function (name) { |
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// promisify only if it's a function |
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if (typeof source[name] === 'function') destination[name] = promisify(source[name]) |
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}) |
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// proxy the rest |
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Object.keys(source).forEach(function (name) { |
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if (deprecated(source, name)) return |
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if (destination[name]) return |
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destination[name] = source[name] |
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}) |
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return destination |
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} |
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function deprecated(source, name) { |
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var desc = Object.getOwnPropertyDescriptor(source, name) |
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if (!desc || !desc.get) return false |
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if (desc.get.name === 'deprecated') return true |
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return false |
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}
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