Transform Firebase Cloud Function TypeScript syntax into JavaScript

Question

Transform Firebase Cloud Function TypeScript syntax into JavaScript

@ParagonLance shared an insightful cloud functions tutorial here, however, the cloud function code snippet is written in TypeScript instead of vanilla JavaScript.

What steps would be needed to convert the following TypeScript code into pure JavaScript?

const ClaimsDocumentData = {
    _lastCommitted: undefined
}
export const mirrorCustomClaims =
functions.firestore.document('user-claims/{uid}')
.onWrite(async (change, context) => {
    const beforeData = 
        change.before.data() || {}
    const afterData = 
        change.after.data() || {}
})

javascript typescript firebase google-cloud-functions

Answer 1

Answer №1

To remove the type data from it, simply strip it down.

exports.mirrorCustomClaims =
functions.firestore.document('user-claims/{uid}')
.onWrite(async (change, context) => {
    const beforeData = change.before.data() || {}
    const afterData = change.after.data() || {}
})

If you want to try another approach, create a new TypeScript project, add the code, compile it, and observe the resulting JavaScript code.

The rest of that example might present more challenges. It's recommended to switch to TypeScript as all JavaScript is valid TypeScript, and you can gradually introduce TypeScript features into your code.

Answer 2

To remove the type data from it, simply strip it down.

exports.mirrorCustomClaims =
functions.firestore.document('user-claims/{uid}')
.onWrite(async (change, context) => {
    const beforeData = change.before.data() || {}
    const afterData = change.after.data() || {}
})

If you want to try another approach, create a new TypeScript project, add the code, compile it, and observe the resulting JavaScript code.

The rest of that example might present more challenges. It's recommended to switch to TypeScript as all JavaScript is valid TypeScript, and you can gradually introduce TypeScript features into your code.

Transform Firebase Cloud Function TypeScript syntax into JavaScript

Answer №1

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