original.js

"use strict"
import {produce, original} from "../src/immer"

const isProd = process.env.NODE_ENV === "production"

describe("original", () => {
	const baseState = {
		a: [],
		b: {}
	}

	it("should return the original from the draft", () => {
		produce(baseState, draftState => {
			expect(original(draftState)).toBe(baseState)
			expect(original(draftState.a)).toBe(baseState.a)
			expect(original(draftState.b)).toBe(baseState.b)
		})
	})

	it("should return the original from the proxy", () => {
		produce(baseState, draftState => {
			expect(original(draftState)).toBe(baseState)
			expect(original(draftState.a)).toBe(baseState.a)
			expect(original(draftState.b)).toBe(baseState.b)
		})
	})

	it("should throw undefined for new values on the draft", () => {
		produce(baseState, draftState => {
			draftState.c = {}
			draftState.d = 3
			expect(() => original(draftState.c)).toThrowError(
				isProd
					? `[Immer] minified error nr: 15. Full error at: https://bit.ly/3cXEKWf`
					: `[Immer] 'original' expects a draft, got: [object Object]`
			)
			expect(() => original(draftState.d)).toThrowError(
				isProd
					? `[Immer] minified error nr: 15. Full error at: https://bit.ly/3cXEKWf`
					: `[Immer] 'original' expects a draft, got: 3`
			)
		})
	})

	it("should return undefined for an object that is not proxied", () => {
		expect(() => original({})).toThrowError(
			isProd
				? `[Immer] minified error nr: 15. Full error at: https://bit.ly/3cXEKWf`
				: `[Immer] 'original' expects a draft, got: [object Object]`
		)
		expect(() => original(3)).toThrowError(
			isProd
				? `[Immer] minified error nr: 15. Full error at: https://bit.ly/3cXEKWf`
				: `[Immer] 'original' expects a draft, got: 3`
		)
	})
})