@decaf-ts/db-decorators
Version:
Agnostic database decorators and repository
93 lines • 11.6 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.prefixMethod = prefixMethod;
exports.suffixMethod = suffixMethod;
exports.wrapMethodWithContext = wrapMethodWithContext;
const Context_1 = require("./Context.cjs");
const errors_1 = require("./errors.cjs");
/**
* @summary Util method to change a method of an object prefixing it with another
* @param {any} obj The Base Object
* @param {Function} after The original method
* @param {Function} prefix The Prefix method. The output will be used as arguments in the original method
* @param {string} [afterName] When the after function anme cannot be extracted, pass it here
*
* @function prefixMethod
*
* @memberOf module:db-decorators
*/
function prefixMethod(obj, after, prefix, afterName) {
async function wrapper(...args) {
const results = await Promise.resolve(prefix.call(this, ...args));
return Promise.resolve(after.apply(this, results));
}
const wrapped = wrapper.bind(obj);
const name = afterName ? afterName : after.name;
Object.defineProperty(wrapped, "name", {
enumerable: true,
configurable: true,
writable: false,
value: name,
});
obj[name] = wrapped;
}
/**
* @summary Util method to change a method of an object suffixing it with another
* @param {any} obj The Base Object
* @param {Function} before The original method
* @param {Function} suffix The Prefix method. The output will be used as arguments in the original method
* @param {string} [beforeName] When the after function anme cannot be extracted, pass it here
*
* @function suffixMethod
*
* @memberOf module:db-decorators.Repository
*/
function suffixMethod(obj, before, suffix, beforeName) {
async function wrapper(...args) {
const results = await Promise.resolve(before.call(this, ...args));
return suffix.call(this, ...results);
}
const wrapped = wrapper.bind(obj);
const name = beforeName ? beforeName : before.name;
Object.defineProperty(wrapped, "name", {
enumerable: true,
configurable: true,
writable: false,
value: name,
});
obj[name] = wrapped;
}
/**
* @summary Util method to wrap a method of an object with additional logic
*
* @param {any} obj The Base Object
* @param {Function} before the method to be prefixed
* @param {Function} method the method to be wrapped
* @param {Function} after The method to be suffixed
* @param {string} [methodName] When the after function anme cannot be extracted, pass it here
*
* @function wrapMethodWithContext
*
* @memberOf module:db-decorators
*/
function wrapMethodWithContext(obj, before, method, after, methodName) {
const name = methodName ? methodName : method.name;
obj[name] = new Proxy(obj[name], {
apply: async (target, thisArg, argArray) => {
let transformedArgs = before.call(thisArg, ...argArray);
if (transformedArgs instanceof Promise)
transformedArgs = await transformedArgs;
const context = transformedArgs[transformedArgs.length - 1];
if (!(context instanceof Context_1.Context))
throw new errors_1.InternalError("Missing a context");
let results = await target.call(thisArg, ...transformedArgs);
if (results instanceof Promise)
results = await results;
results = after.call(thisArg, results, context);
if (results instanceof Promise)
results = await results;
return results;
},
});
}
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