objtranspose
v0.4.242
Published
Transpose arrayOfObject <==> objectOfArray with typescript typed result.
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objtranspose
Transpose arrayOfObject <==> objectOfArray with typescript typed result.
Usage
import objTranspose, { aoj2joa, joa2aoj } from "objtranspose";
const aoj = [
{ a: 1, b: 2, c: null },
{ a: 2, c: 3 },
{ a: 3, c: 4 },
];
const joa = {
a: [1, 2, 3],
b: [2, undefined, undefined],
c: [null, 3, 4],
};
console.log(objTransipose(aoj)); // => joa
console.log(objTranspose(joa)); // => aoj
Test
Test
import { it } from "vitest";
import objTranspose, { aoj2joa, joa2aoj } from "./objTrans";
const aoj = [
{ a: 1, b: 2, c: null },
{ a: undefined, c: 3 },
{ a: 3, c: 4 },
];
const joa = {
a: [1, undefined, 3],
b: [2, undefined, undefined],
c: [null, 3, 4],
};
const throws = () => {
throw new Error("");
};
const shouldEq = (a, b) => JSON.stringify(a) === JSON.stringify(b) || throws();
//
it("use aoj2joa transpose Array of Object to Object of Array", () => {
shouldEq(aoj2joa(aoj), joa);
});
it("use joa2aoj transpose Object of Array to Array of Object", () => {
shouldEq(aoj, joa2aoj(joa));
});
it("use objtranspose transpose Array of Object to Object of Array", () => {
shouldEq(objTranspose(aoj), joa);
});
it("use objtranspose transpose Object of Array to Array of Object", () => {
shouldEq(aoj, objTranspose(joa));
});
it("use objtranspose transpose Array of Object twice and get it self", () => {
shouldEq(objTranspose(objTranspose(aoj)), aoj);
});
it("use objtranspose transpose Object of Array twice and get it self", () => {
shouldEq(joa, objTranspose(objTranspose(joa)));
});
Test Result
✔ use aoj2joa transpose Array of Object to Object of Array
✔ use joa2aoj transpose Object of Array to Array of Object
✔ use objtranspose transpose Array of Object to Object of Array
✔ use objtranspose transpose Object of Array to Array of Object
✔ use objtranspose transpose Array of Object twice and get it self
✔ use objtranspose transpose Object of Array twice and get it self
6 passing (17ms)
About
License
GPLv3 - The GNU General Public License v3.0 - GNU Project - Free Software Foundation
Author
Author: snomiao [email protected] Website: snomiao.com
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Contribute
The main repo is in here, any issue and PR's welcome.