@parcel/transformer-js build failed

Question

I run parcel2 build command: parcel build src/web/index.html

and I got the following error

➜ my-webapp git:(master) ✗ npm run build-dev
> [email protected] build-dev
> parcel build src/web/index.html
🚨 Build failed.
@parcel/transformer-js: Expected ',', got '{'
 /Users/me/my-webapp/node_modules/react-native-inappbrowser-reborn/index.js:9:13
 8 | 
 > 9 | import type {
 > | ^
 10 | BrowserResult,
 11 | AuthSessionResult,

Another example:

🚨 Build failed.
@parcel/transformer-js: Expected ',', got ':'
 /Users/me/my-webapp/node_modules/react-native/Libraries/Utilities/binaryToBase64.js:15:29
 14 | 
 > 15 | function binaryToBase64(data: ArrayBuffer | $ArrayBufferView): string {
 > | ^
 16 | if (data instanceof ArrayBuffer) {
 17 | // $FlowFixMe[reassign-const]

My current parcel2 config is:

{
 "extends": [
 "@parcel/config-default"
 ],
 "reporters": [
 "...",
 "parcel-reporter-static-files-copy"
 ],
 "transformers": {
 "*.{js,mjs,jsm,jsx,es6,cjs,ts,tsx}": [
 "@parcel/transformer-babel",
 "@parcel/transformer-js"
 ]
 }
}

Do you have any idea?

Answer 1

I found my mistake: one of my import line created a but dependency between components. After removing the import line, the build was Ok.

✨ Built in 12.31s