Run results for: _.groupBy vs reduce

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            "consumerId": "273f3b18-5dda-4a27-984a-060c7cd398d3",
            "learningOutcome": [
                "संगीतबद्ध गीत अधिक प्रभावशाली"
            ],
            "discussionForum": {
                "enabled": "No"
            },
            "index": 1,
            "mediaType": "content",
            "osId": "org.ekstep.quiz.app",
            "languageCode": [
                "en"
            ],
            "version": 2,
            "pragma": [
                "external"
            ],
            "license": "CC BY 4.0",
            "prevState": "Review",
            "size": 3028,
            "lastPublishedOn": "2021-08-24T10:52:50.263+0000",
            "name": "content 000333",
            "topic": [
                "कर चले हम फ़िदा"
            ],
            "status": "Live",
            "code": "639531e1-644a-50c7-3cd3-90a87cefe35d",
            "credentials": {
                "enabled": "No"
            },
            "prevStatus": "Draft",
            "origin": "do_113135356952608768128",
            "streamingUrl": "https://sunbirddev.blob.core.windows.net/sunbird-content-dev/content/do_113135356952608768128/artifact/do_113135356952608768128_1629802359553_sample.pdf",
            "medium": [
                "English"
            ],
            "posterImage": "https://sunbirddev.blob.core.windows.net/sunbird-content-dev/content/do_113135356952608768128/assets/focus-spot_1561727473311.thumb_1576602905573.png",
            "idealScreenSize": "normal",
            "createdOn": "2021-08-24T10:52:39.262+0000",
            "processId": "7790d600-3cf3-4d15-8d6c-e297901946f3",
            "contentDisposition": "inline",
            "lastUpdatedOn": "2021-08-24T10:52:51.168+0000",
            "originData": {
                "identifier": "do_113135356952608768128",
                "repository": "https://dock.sunbirded.org/api/content/v1/read/do_113135356952608768128"
            },
            "collectionId": "do_11313495680636518412982",
            "dialcodeRequired": "No",
            "lastStatusChangedOn": "2021-08-24T10:52:51.168+0000",
            "createdFor": [
                "0130659746662727680"
            ],
            "creator": "dharan1",
            "os": [
                "All"
            ],
            "cloudStorageKey": "content/do_113135356952608768128/artifact/do_113135356952608768128_1629802359553_sample.pdf",
            "se_FWIds": [
                "ekstep_ncert_k-12"
            ],
            "pkgVersion": 1,
            "versionKey": "1629802361408",
            "idealScreenDensity": "hdpi",
            "framework": "ekstep_ncert_k-12",
            "depth": 3,
            "s3Key": "content/do_113135356952608768128/artifact/do_113135356952608768128_1629802359553_sample.pdf",
            "lastSubmittedOn": "2021-08-24T10:52:41.177+0000",
            "createdBy": "424644bc-62ec-4222-b79c-206e1bf83807",
            "compatibilityLevel": 4,
            "board": "CBSE",
            "programId": "12b66660-148d-11eb-81b1-659ec274e395",
            "resourceType": "Read"
        },
        "root": false
    }
];

Tests:

Lodash
_.groupBy(data, ({ primaryCategory }) => primaryCategory)
Native
data.reduce((acc, item) => { if(_.isEmpty(acc[item.primaryCategory])) {acc[item.primaryCategory] = []} acc[item.primaryCategory].push(item); return acc; }, {})

Run results for: _.groupBy vs reduce

Lodash

Native