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JavaScript で 2 つのデータの差分を可視化したい場合は jest-diff

Last updated at Posted at 2022-11-25

https://jestjs.io/ja/docs/jest-platform#jest-diff

jest-diff は 2 つのデータの差分を可視化できる。
別に テスト用途でなくとも、独立した機能として使える

const { diff } = require('jest-diff');

const a = {a: {b: {c: 5}}};
const b = {a: {b: {c: 6}}};

const result = diff(a, b);

出力結果:

  Object {
    "a": Object {
      "b": Object {
-       "c": 5,
+       "c": 6,
      },
    },
  }
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