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Merge pull request #6113 from tkqubo/lodash-decorators
Lodash decorators
This commit is contained in:
Masahiro Wakame
@@ -0,0 +1,370 @@
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/// <reference path="lodash-decorators.d.ts" />
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/// <reference path="../lodash/lodash.d.ts" />
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//
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// With Arguments
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//
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import { after, debounce, memoize, curry } from 'lodash-decorators'
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class Person {
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firstName: string;
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lastName: string;
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constructor(firstName: string, lastName: string) {
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this.firstName = firstName;
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this.lastName = lastName;
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}
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@after(3)
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@debounce(100)
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getFullName(): string {
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return `${this.firstName} ${this.lastName}`
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}
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@curry(2)
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@memoize()
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doSomeHeavyProcessing(arg1: any, arg2: any) {
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}
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}
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//
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// Without Arguments
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//
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import { tap } from 'lodash-decorators'
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class Person2 {
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firstName: string;
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lastName: string;
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constructor(firstName?: string, lastName?: string) {
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this.firstName = firstName;
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this.lastName = lastName;
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}
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@once
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getFullName(): string {
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return `${this.firstName} ${this.lastName}`
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}
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@tap
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popIt(list: number[]): void {
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list.pop();
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}
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}
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const person2 = new Person2();
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person2.popIt([1, 2, 3]); //=> [1, 2]
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//
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// Partials
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//
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import { partial, wrap } from 'lodash-decorators'
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class Person3 {
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firstName: string;
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lastName: string;
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constructor(firstName?: string, lastName?: string) {
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this.firstName = firstName;
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this.lastName = lastName;
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}
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getName(type: string) {
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return type === 'firstName' ? this.firstName : this.lastName
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}
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@partial('getName', 'firstName')
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getFirstName(): string { return null; }
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@partial('getName', null)
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getLastName(): string { return null; }
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@wrap('getName')
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getUpperCaseName(fn: () => string): string {
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return fn().toUpperCase();
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}
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}
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//by .d.ts author: a workaround to ensure type
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interface Person3Ex extends Person3 {
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getUpperCaseName(): string;
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}
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const person3 = new Person3('Joe', 'Smith') as Person3Ex;
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person3.getFirstName(); // 'Joe'
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person3.getLastName(); // 'Smith'
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person3.getUpperCaseName(); // JOE SMITH
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//
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// Composition
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//
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//import { kebabCase } from 'lodash';
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import * as _ from 'lodash';
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class Person4 {
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firstName: string;
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lastName: string;
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constructor(firstName?: string, lastName?: string) {
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this.firstName = firstName;
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this.lastName = lastName;
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}
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getName(): string {
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return `${this.firstName} ${this.lastName}`;
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}
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@compose(_.kebabCase, 'getName')
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logName(name: string): void {
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console.log(name);
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}
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}
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//by .d.ts author: a workaround to ensure type
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interface Person4Ex extends Person4 {
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logName(): void;
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}
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const person4 = new Person4('Joe', 'Smith') as Person4Ex;
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person4.logName(); // joe-smith
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//
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// Instance Decorators
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//
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class Person5 {
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@curry(2) // <= prototype decorator
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@debounce(100) // <= instance decorator
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getName() {} //=> Throws an error. (╯°□°）╯︵ ┻━┻
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@debounce(100) // <= instance decorator
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@curry(2) // <= prototype decorator
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getName2() {} //=> All is well :)
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}
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//
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// Getters and Setters
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//
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import { once, compose } from 'lodash-decorators'
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function alwaysArray(value: string|string[]): string[] {
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return Array.isArray(value) ? value : _.isUndefined(value) ? [] : [value];
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}
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class Person6 {
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constructor() {}
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private nameList: string[];
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//TODO: So far, TypeScript doesn't allow to put multiple decoratoes on set/get accessors.
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// see https://github.com/Microsoft/TypeScript/issues/2249#issuecomment-141684146
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//@once.get
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get names(): string[] {
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//MEMO: Resolve type inconsistency
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return [this.nameList.join(' ')];
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//MEMO: Original expression in repo
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//return this.nameList.join(' ');
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}
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@compose.set(alwaysArray)
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set names(names: string[]) {
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this.nameList = names;
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}
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}
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//by .d.ts author: a workaround to ensure type
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interface Person6Alt {
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names: string[]|string;
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}
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const person6 = new Person6();
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// nameList will always be an array.
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person6.names = undefined; //=> []
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(person6 as Person6Alt).names = 'Joe'; //=> ['Joe']
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person6.names = ['Jim']; //=> ['Jim']
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//
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// Bind
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//
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import { bind } from 'lodash-decorators'
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class Person7 {
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firstName: string;
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lastName: string;
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constructor(firstName: string, lastName: string) {
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this.firstName = firstName;
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this.lastName = lastName;
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}
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@bind()
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getName(): string {
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return `${this.firstName} ${this.lastName}`;
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}
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// It can also function as a partial
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@bind('Joe')
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getUpperCaseName(name: string): string {
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return name.toUpperCase();
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}
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}
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//by .d.ts author: a workaround to ensure type
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interface Person7Ex extends Person7 {
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getUpperCaseName(): string;
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}
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const person7 = new Person7('Joe', 'Smith') as Person7Ex;
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person7.getName.call(null); // Joe Smith
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person7.getUpperCaseName(); // JOE
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import { bindAll } from 'lodash-decorators'
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@bindAll()
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class Person8 {
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firstName: string;
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lastName: string;
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constructor(firstName: string, lastName: string) {
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this.firstName = firstName;
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this.lastName = lastName;
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}
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getName() {
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return `${this.firstName} ${this.lastName}`;
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}
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}
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const person8 = new Person8('Joe', 'Smith');
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person8.getName.call(null); // Joe Smith
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//
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// Forcing Decorator on Prototype
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//
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import { throttle } from 'lodash-decorators';
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class Person9 {
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@throttle(1000)
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doStuff() {}
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@throttle.proto(1000)
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doStuffMore() {}
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}
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const person9_1 = new Person9();
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const person9_2 = new Person9();
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person9_1.doStuff(); //=> Both are called
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person9_2.doStuff();
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person9_1.doStuffMore();
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person9_2.doStuffMore();
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// Only one of these methods is actual invoked because throttle is applied to the prototype method
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// and not the instance method.
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//
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// Extensions
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//
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import { deprecated } from 'lodash-decorators/extensions'
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// This is applied globally.
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deprecated.methodAction = fn => console.log(`Don't use ${fn.name}!`);
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@deprecated
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class Person10 {
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constructor() {}
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}
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class OtherPerson {
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@deprecated
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fn() {}
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}
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let person10 = new Person10(); //=> Warning!
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let otherPerson = new OtherPerson();
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otherPerson.fn(); //=> Don't use fn!
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//
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// https://github.com/steelsojka/lodash-decorators/tree/master/src/extensions
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//
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import { Writable, ReturnsArg } from 'lodash-decorators/extensions';
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class Person11 {
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constructor() {}
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@Writable(false)
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getName() {}
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@ReturnsArg(1)
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doSomething(x: any, y: any, z: any) {
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// Do something here
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}
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}
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//
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// https://github.com/steelsojka/lodash-decorators/tree/master/src/validate
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//
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import { Validate } from 'lodash-decorators/validate';
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class Person12 {
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name: string;
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constructor() {}
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@Validate(_.isString)
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setName(name: any) {
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this.name = name as string;
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}
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}
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class Person13 {
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name: string;
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age: number;
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constructor() {}
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@Validate(
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_.isString,
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[_.isNumber, _.partial(_.lt, 10) as ((_: any) => boolean)]
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)
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setData(name: any, age: any) {
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this.name = name as string;
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this.age = age as number;
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}
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}
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const person13 = new Person13();
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person13.setData('test', 5); //=> TypeError
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person13.setData('test', 12); //=> Valid
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//
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// Additional typings
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//
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import { validateReturn } from 'lodash-decorators/validate';
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class Calc {
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@validateReturn((c: number) => c > 0)
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add(a: number, b: number): number {
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return a + b;
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}
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@validateReturn<number>([c => c > 0])
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mul(a: number, b: number): number {
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return a + b;
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}
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}
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@@ -0,0 +1 @@
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--experimentalDecorators --noImplicitAny --target ES5
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+272
@@ -0,0 +1,272 @@
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// Type definitions for lodash-decorators 1.0.5
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// Project: https://github.com/steelsojka/lodash-decorators
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// Definitions by: Qubo <https://github.com/tkqubo>
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// Definitions: https://github.com/borisyankov/DefinitelyTyped
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///<reference path="../lodash/lodash.d.ts"/>
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declare module "lodash-decorators" {
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// Originally copied from ../node_modules/typescript/lib/lib.es6.d.ts
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export interface ClassDecorator {
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<TFunction extends Function>(target: TFunction): TFunction|void;
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}
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export interface PropertyDecorator {
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(target: Object, propertyKey: string | symbol): void;
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}
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export interface MethodDecorator {
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<T>(target: Object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<T>): TypedPropertyDescriptor<T> | void;
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}
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export interface ParameterDecorator {
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(target: Object, propertyKey: string | symbol, parameterIndex: number): void;
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}
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export interface TypedMethodDecorator<TFunction extends Function> {
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(target: Object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<TFunction>): TypedPropertyDescriptor<TFunction> | void;
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}
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export interface MethodDecoratorWithAccessor extends MethodDecorator, Accessor<MethodDecorator> {
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}
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export interface Accessor<T> {
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set: T;
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get: T;
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proto: T;
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}
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export interface DebounceDecorator {
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(wait: number, options?: _.DebounceSettings): MethodDecorator;
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}
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export interface ThrottleDecorator {
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(wait: number, options?: _.ThrottleSettings): MethodDecorator;
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}
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export interface MemoizeDecorator {
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(resolver?: Function): MethodDecorator;
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}
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export interface AfterDecorator {
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(n: number): MethodDecorator;
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}
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export interface BeforeDecorator {
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(n: number): MethodDecorator;
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}
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export interface AryDecorator {
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(n: number): MethodDecorator;
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}
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export interface CurryDecorator {
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(arity?: number): MethodDecorator;
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}
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export interface CurryRightDecorator {
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(arity?: number): MethodDecorator;
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}
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export interface RestParamDecorator {
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(start?: number): MethodDecorator;
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}
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export interface PartialDecorator {
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(func: Function|string, ...args: any[]): MethodDecorator;
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}
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export interface WrapDecorator {
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(wrapper: ((func: Function, ...args: any[]) => any)|string): MethodDecorator;
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}
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export interface ComposeDecorator {
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(...funcs: (Function|string)[]): MethodDecorator;
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}
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export interface DelayDecorator {
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(wait: number, ...args: any[]): MethodDecorator;
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}
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export interface DeferDecorator {
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(...args: any[]): MethodDecorator;
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}
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export interface BindDecorator {
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(): TypedMethodDecorator<(<R>() => R)>;
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<T1>(param1?: T1):
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TypedMethodDecorator<(<R>(param1: T1) => R)>;
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<T1, T2>(param1?: T1, param2?: T2):
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TypedMethodDecorator<(<R>(param1: T1, param2: T2) => R)>;
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<T1, T2, T3>(param1?: T1, param2?: T2, param3?: T3):
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TypedMethodDecorator<(<R>(param1: T1, param2: T2, param3: T3) => R)>;
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<T1, T2, T3, T4>(param1?: T1, param2?: T2, param3?: T3, param4?: T4):
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TypedMethodDecorator<(<R>(param1: T1, param2: T2, param3: T3, param4: T4) => R)>;
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<T1, T2, T3, T4, T5>(param1?: T1, param2?: T2, param3?: T3, param4?: T4, param5?: T5):
|
||||
TypedMethodDecorator<(<R>(param1: T1, param2: T2, param3: T3, param4: T4, param5: T5) => R)>;
|
||||
<T1, T2, T3, T4, T5, T6>(param1?: T1, param2?: T2, param3?: T3, param4?: T4, param5?: T5, param6?: T6):
|
||||
TypedMethodDecorator<(<R>(param1: T1, param2: T2, param3: T3, param4: T4, param5: T5, param6: T6) => R)>;
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}
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export interface BindAllDecorator {
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(...methodNames: string[]): ClassDecorator;
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}
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export interface ModArgsDecorator {
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||||
(...transforms: Function[]): MethodDecorator;
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||||
}
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||||
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||||
export const debounce: DebounceDecorator & Accessor<DebounceDecorator>;
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export const Debounce: DebounceDecorator & Accessor<DebounceDecorator>;
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||||
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||||
export const throttle: ThrottleDecorator & Accessor<ThrottleDecorator>;
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||||
export const Throttle: ThrottleDecorator & Accessor<ThrottleDecorator>;
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||||
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export const memoize: MemoizeDecorator & Accessor<MemoizeDecorator>;
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||||
export const Memoize: MemoizeDecorator & Accessor<MemoizeDecorator>;
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||||
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||||
export const after: AfterDecorator & Accessor<AfterDecorator>;
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||||
export const After: AfterDecorator & Accessor<AfterDecorator>;
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||||
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||||
export const before: BeforeDecorator & Accessor<BeforeDecorator>;
|
||||
export const Before: BeforeDecorator & Accessor<BeforeDecorator>;
|
||||
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||||
export const ary: AryDecorator & Accessor<AryDecorator>;
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||||
export const Ary: AryDecorator & Accessor<AryDecorator>;
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||||
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||||
export const curry: CurryDecorator & Accessor<CurryDecorator>;
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||||
export const Curry: CurryDecorator & Accessor<CurryDecorator>;
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||||
|
||||
export const curryRight: CurryRightDecorator & Accessor<CurryRightDecorator>;
|
||||
export const CurryRight: CurryRightDecorator & Accessor<CurryRightDecorator>;
|
||||
|
||||
export const restParam: RestParamDecorator & Accessor<RestParamDecorator>;
|
||||
export const RestParam: RestParamDecorator & Accessor<RestParamDecorator>;
|
||||
|
||||
export const partial: PartialDecorator & Accessor<PartialDecorator>;
|
||||
export const Partial: PartialDecorator & Accessor<PartialDecorator>;
|
||||
|
||||
export const partialRight: PartialDecorator & Accessor<PartialDecorator>;
|
||||
export const PartialRight: PartialDecorator & Accessor<PartialDecorator>;
|
||||
|
||||
export const wrap: WrapDecorator & Accessor<WrapDecorator>;
|
||||
export const Wrap: WrapDecorator & Accessor<WrapDecorator>;
|
||||
|
||||
export const compose: ComposeDecorator & Accessor<ComposeDecorator>;
|
||||
export const Compose: ComposeDecorator & Accessor<ComposeDecorator>;
|
||||
|
||||
export const flow: ComposeDecorator & Accessor<ComposeDecorator>;
|
||||
export const Flow: ComposeDecorator & Accessor<ComposeDecorator>;
|
||||
|
||||
export const flowRight: ComposeDecorator & Accessor<ComposeDecorator>;
|
||||
export const FlowRight: ComposeDecorator & Accessor<ComposeDecorator>;
|
||||
|
||||
export const backflow: ComposeDecorator & Accessor<ComposeDecorator>;
|
||||
export const Backflow: ComposeDecorator & Accessor<ComposeDecorator>;
|
||||
|
||||
export const delay: DelayDecorator & Accessor<DelayDecorator>;
|
||||
export const Delay: DelayDecorator & Accessor<DelayDecorator>;
|
||||
|
||||
export const defer: DeferDecorator & Accessor<DeferDecorator>;
|
||||
export const Defer: DeferDecorator & Accessor<DeferDecorator>;
|
||||
|
||||
export const bind: BindDecorator & Accessor<BindDecorator>;
|
||||
export const Bind: BindDecorator & Accessor<BindDecorator>;
|
||||
|
||||
export const bindAll: BindAllDecorator;
|
||||
export const BindAll: BindAllDecorator;
|
||||
|
||||
export const modArgs: ModArgsDecorator & Accessor<ModArgsDecorator>;
|
||||
export const ModArgs: ModArgsDecorator & Accessor<ModArgsDecorator>;
|
||||
|
||||
export const once: MethodDecoratorWithAccessor;
|
||||
export const Once: MethodDecoratorWithAccessor;
|
||||
|
||||
export const spread: MethodDecoratorWithAccessor;
|
||||
export const Spread: MethodDecoratorWithAccessor;
|
||||
|
||||
export const rearg: MethodDecoratorWithAccessor;
|
||||
export const Rearg: MethodDecoratorWithAccessor;
|
||||
|
||||
export const negate: MethodDecoratorWithAccessor;
|
||||
export const Negate: MethodDecoratorWithAccessor;
|
||||
|
||||
export const tap: MethodDecoratorWithAccessor;
|
||||
export const Tap: MethodDecoratorWithAccessor;
|
||||
}
|
||||
|
||||
declare module "lodash-decorators/extensions" {
|
||||
// Originally copied from ../node_modules/typescript/lib/lib.es6.d.ts
|
||||
export interface ClassDecorator {
|
||||
<TFunction extends Function>(target: TFunction): TFunction|void;
|
||||
}
|
||||
export interface PropertyDecorator {
|
||||
(target: Object, propertyKey: string | symbol): void;
|
||||
}
|
||||
export interface MethodDecorator {
|
||||
<T>(target: Object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<T>): TypedPropertyDescriptor<T> | void;
|
||||
}
|
||||
export interface ParameterDecorator {
|
||||
(target: Object, propertyKey: string | symbol, parameterIndex: number): void;
|
||||
}
|
||||
|
||||
export interface DeprecatedDecorator extends MethodDecorator, ClassDecorator {
|
||||
methodAction(fn: Function & { name: string }): void;
|
||||
}
|
||||
|
||||
export const deprecated: DeprecatedDecorator;
|
||||
export const Deprecated: DeprecatedDecorator;
|
||||
|
||||
export const writable: (writable?: boolean) => MethodDecorator;
|
||||
export const Writable: (writable?: boolean) => MethodDecorator;
|
||||
|
||||
export const configurable: (configurable?: boolean) => MethodDecorator;
|
||||
export const Configurable: (configurable?: boolean) => MethodDecorator;
|
||||
|
||||
export const returnsArg: (index?: number) => MethodDecorator;
|
||||
export const ReturnsArg: (index?: number) => MethodDecorator;
|
||||
|
||||
export const enumerable: (enumerable?: boolean) => MethodDecorator;
|
||||
export const Enumerable: (enumerable?: boolean) => MethodDecorator;
|
||||
|
||||
export const nonenumerable: MethodDecorator;
|
||||
export const Nonenumerable: MethodDecorator;
|
||||
|
||||
export const nonconfigurable: MethodDecorator;
|
||||
export const Nonconfigurable: MethodDecorator;
|
||||
|
||||
export const readonly: MethodDecorator;
|
||||
export const Readonly: MethodDecorator;
|
||||
}
|
||||
|
||||
declare module "lodash-decorators/validate" {
|
||||
// Originally copied from ../node_modules/typescript/lib/lib.es6.d.ts
|
||||
export interface ClassDecorator {
|
||||
<TFunction extends Function>(target: TFunction): TFunction|void;
|
||||
}
|
||||
export interface PropertyDecorator {
|
||||
(target: Object, propertyKey: string | symbol): void;
|
||||
}
|
||||
export interface MethodDecorator {
|
||||
<T>(target: Object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<T>): TypedPropertyDescriptor<T> | void;
|
||||
}
|
||||
export interface ParameterDecorator {
|
||||
(target: Object, propertyKey: string | symbol, parameterIndex: number): void;
|
||||
}
|
||||
|
||||
export interface TypedMethodDecorator<TFunction extends Function> {
|
||||
(target: Object, propertyKey: string | symbol, descriptor: TypedPropertyDescriptor<TFunction>): TypedPropertyDescriptor<TFunction> | void;
|
||||
}
|
||||
|
||||
export interface Predicate<T> {
|
||||
(t: T): boolean;
|
||||
}
|
||||
type Predicates<T> = Predicate<T>|Predicate<T>[];
|
||||
|
||||
export interface ValidateDecorator {
|
||||
<T1>(p1: Predicates<T1>):
|
||||
TypedMethodDecorator<(<R>(param1: T1) => R)>;
|
||||
<T1, T2>(p1: Predicates<T1>, p2?: Predicates<T2>):
|
||||
TypedMethodDecorator<(<R>(param1: T1, param2: T2) => R)>;
|
||||
<T1, T2, T3>(p1: Predicates<T1>, p2?: Predicates<T2>, p3?: Predicates<T3>):
|
||||
TypedMethodDecorator<(<R>(param1: T1, param2: T2, param3: T3) => R)>;
|
||||
<T1, T2, T3, T4>(p1: Predicates<T1>, p2?: Predicates<T2>, p3?: Predicates<T3>, p4?: Predicates<T4>):
|
||||
TypedMethodDecorator<(<R>(param1: T1, param2: T2, param3: T3, param4: T4) => R)>;
|
||||
<T1, T2, T3, T4, T5>(p1: Predicates<T1>, p2?: Predicates<T2>, p3?: Predicates<T3>, p4?: Predicates<T4>, p5?: Predicates<T5>):
|
||||
TypedMethodDecorator<(<R>(param1: T1, param2: T2, param3: T3, param4: T4, param5: T5) => R)>;
|
||||
<T1, T2, T3, T4, T5, T6>(p1: Predicates<T1>, p2?: Predicates<T2>, p3?: Predicates<T3>, p4?: Predicates<T4>, p5?: Predicates<T5>, p6?: Predicates<T6>):
|
||||
TypedMethodDecorator<(<R>(param1: T1, param2: T2, param3: T3, param4: T4, param5: T5, param6: T6) => R)>;
|
||||
}
|
||||
|
||||
export interface ValidateReturnDecorator {
|
||||
<R>(p1: Predicates<R>): TypedMethodDecorator<((...args: any[]) => R)>;
|
||||
}
|
||||
|
||||
export const validate: ValidateDecorator;
|
||||
export const Validate: ValidateDecorator;
|
||||
|
||||
export const validateReturn: ValidateReturnDecorator;
|
||||
export const ValidateReturn: ValidateReturnDecorator;
|
||||
}
|
||||
Reference in New Issue
Block a user