changes in jest snapshots class names

[MagicDuck]

hi, I am switching from babel to swc in jest, and am seeing this change in snapshots:

      Array [
    -   Event {
    +   Event1 {
          "eventId": "204001",
          "form": Object {
            "id": "036bd8e2-50fc-4098-a866-623c2f5b829c",
            "name": "alldevices form",
          },

where Event corresponds to new Event() .

Same thing happens with a react function component called Response :

    -     <Response
    +     <Response1
            enableLinking={true}

Does anybody know if there is some swc option I could turn on to prevent that?

[kdy1]

See: https://swc.rs/docs/configuring-swc/#jsckeepclassnames

[MagicDuck]

hmm, that does not seem to make a difference in this case. This is my swcrc:

 {
  "jsc": {
    "transform": {
      "hidden": {
        "jest": true
      }
    },
    "parser": {
      "syntax": "ecmascript",
      "jsx": true,
      "dynamicImport": true,
      "privateMethod": false,
      "functionBind": false,
      "exportDefaultFrom": true,
      "exportNamespaceFrom": true,
      "decorators": false,
      "decoratorsBeforeExport": false,
      "topLevelAwait": false,
      "importMeta": false
    },
    "target": "es2016",
    "loose": true,
    "externalHelpers": true,
    "keepClassNames": true
  },
  "module": {
    "type": "commonjs"
  },
  "env": {
    "coreJs": 3,
    "mode": "entry",
    "shippedProposals": true
  },
  "sourceMaps": true
}

[MagicDuck]

it's only a few of them that exhibit this behaviour, but am not exactly sure what causes it. Not the biggest problem :)