Configuring play-services version on capacitor

[p-v-d-Veeken]

In the documentation it says:
Use the GMS_VERSION to align the required play-services version with other plugins.

cordova plugin add cordova-plugin-google-analytics --variable GMS_VERSION=11.0.1

However I'm working on a capacitor project and although it was fairly painless to install the plugin, I'm now having issues building the app due to version mismatches:

Error: All gms/firebase libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 17.0.0, 11.0.1. Examples include com.google.android.gms:play-services-base:17.0.0 and com.google.android.gms:play-services-analytics-impl:11.0.1 

It appears this problem could be trivially fixed by specifying the GMS_VERSION, but I don't know if that's possible with capacitor. Any help would be greatly appreciated. :)

[p-v-d-Veeken]

For anyone having the same problem, the following hack solved it for me:

1. Adding the following to your app's package.json

    "scripts": {
        "postinstall": "npx ts-node scripts/setGoogleAnalyticsVersion.ts"
    }

2. Create scripts/setGoogleAnalyticsVersion.ts and add the following contents:

import * as fs from 'fs';

const GMS_VERSION = '17.0.0';
const PLUGIN_PATH = './node_modules/cordova-plugin-google-analytics/plugin.xml';

console.log(`Attempting to set $GMS_VERSION = ${GMS_VERSION} in ${PLUGIN_PATH}`);

const pluginContents = fs.readFileSync(PLUGIN_PATH).toString('utf8');
const pluginContentsUpdated = pluginContents.replace('$GMS_VERSION', GMS_VERSION);

fs.writeFileSync(PLUGIN_PATH, pluginContentsUpdated);

console.log('Success!');

No doubt there are better ways to achieve the same thing, but at least it works.

[victorsosa]

PR are welcome