[英]node.js object extended with a mixin can't find function after instantiation
I've managed to get a fairly complex setup (though that's a question for Code Review) for my mixins that looks like this: 我已经为我的mixins获得了一个相当复杂的设置(尽管这是代码审查的问题),如下所示:
TooManyCaps.js TooManyCaps.js
module.exports = {
labelCopyCaps: () => {
if (this.release.tracks.length > 1) {
if (_this._notEnoughLowercase(this.release.title)) {
this._recordError(release, 'LABELCOPYCAPS');
} else {
this.release.tracks.some( (track) => {
if (this._lowerCaseCount(track.label_copy)) {
this._recordError(release, 'LABELCOPYCAPS');
return true;
}
});
}
}
},
_notEnoughLowercase: (str) => {
if ((str.match(/[a-zA-Z]/g)||[]).length > 3
&& str.length - str.replace(/[a-z]/g, '').length) {
return true;
}
return false;
}
};
I then have an Object that would use this as a mixin: 然后,我有一个将其用作混合的对象:
Rule.js Rule.js
class Rule {
constructor(release) {
this.release = release;
this.errors = [];
}
_recordError(error, options) {
this.errors.push({
release_id: this.release.id,
rule: error,
options: options,
});
}
}
module.exports = Rule;
i then have an index page that joins them together 然后我有一个索引页面,将它们连接在一起
index.js index.js
const TooManyCaps = require('./TooManyCaps');
const Rule = require('./Rule');
Object.assign(Rule.prototype, [TooManyCaps]);
module.exports = Rule;
And then my main start of the program that does some instantiating of things: 然后,我的程序的主要开始是进行一些实例化:
'use strict';
const RuleValidator = require('./job/validation/RuleValidatorMixin');
const Rule = require('./job/validation/rulesmixins/rules/index');
// some logic that's a loop
arr.forEach((value) => {
new RuleValidator(new Rule(value)).validate();
}
and within validate() I have: 在validate()中,我有:
validate() {
console.log('VALIDATE');
this.rule.labelCopyCaps();
// console.log(this.rule);
}
But then when I run this, I get: 但是当我运行它时,我得到:
this.rule.labelCopyCaps is not a function
So where have i gone wrong? 那我哪里出问题了?
Object.assign
does not take an array: Object.assign
不采用数组:
Object.assign(Rule.prototype, [TooManyCaps]); // ^ ^
should be just 应该只是
Object.assign(Rule.prototype, TooManyCaps);
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