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46 lines
1.2 KiB
46 lines
1.2 KiB
/* |
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MIT License http://www.opensource.org/licenses/mit-license.php |
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*/ |
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"use strict"; |
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class Serializer { |
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constructor(middlewares, context) { |
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this.serializeMiddlewares = middlewares.slice(); |
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this.deserializeMiddlewares = middlewares.slice().reverse(); |
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this.context = context; |
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} |
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serialize(obj, context) { |
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const ctx = { ...context, ...this.context }; |
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let current = obj; |
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for (const middleware of this.serializeMiddlewares) { |
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if (current && typeof current.then === "function") { |
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current = current.then(data => data && middleware.serialize(data, ctx)); |
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} else if (current) { |
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try { |
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current = middleware.serialize(current, ctx); |
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} catch (err) { |
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current = Promise.reject(err); |
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} |
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} else break; |
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} |
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return current; |
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} |
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deserialize(value, context) { |
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const ctx = { ...context, ...this.context }; |
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/** @type {any} */ |
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let current = value; |
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for (const middleware of this.deserializeMiddlewares) { |
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if (current && typeof current.then === "function") { |
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current = current.then(data => middleware.deserialize(data, ctx)); |
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} else { |
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current = middleware.deserialize(current, ctx); |
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} |
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} |
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return current; |
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} |
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} |
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module.exports = Serializer;
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