How to fix Unexpected token error while compiling vuejs project? - vue.js

Question

Following these steps:
Install fresh vuejs 2. Don't change package.json.
Install vue-notion package. This is a renderer for the Notion based on vuejs.
Inject the NotionRenderer object into any page like in an official example: import { NotionRenderer } from 'vue-notion'
Run npm run serve or yarn serve (I've tried both)
... I get the following error while compiling:
error in ./node_modules/vue-notion/dist/esm.js
Module parse failed: Unexpected token (1793:175)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
|
| // return empty notion decorated text if row is empty
> return (this === null || this === void 0 ? void 0 : (_this$properties = this.properties) === null || _this$properties === void 0 ? void 0 : _this$properties[columnId]) ?? [[" ", false]];
| },
|
# ./src/main.js 9:0-44
# multi (webpack)-dev-server/client?http://192.168.0.107:8080&sockPath=/sockjs-node (webpack)/hot/dev-server.js ./src/main.js
The problem is the nullish coalescing operator (??) at the end of the string.
I've tried to add #babel/plugin-proposal-nullish-coalescing-operator into babel.config, but it still doesn't work:
module.exports = {
presets: [
'#vue/cli-plugin-babel/preset'
],
plugins: [
'#babel/plugin-proposal-nullish-coalescing-operator',
],
}
How can I fix it? What kind of a loader should I use to compile the code?

Answer 1

Thank #Jonathan. I've solved this problem by adding a transpile directive into vue.config.js:
module.exports = {
transpileDependencies: ["vue-notion"]
}