Unable to run the react app in android 5.0 version

[kollachaitanyakrishna]

a. Building the sample react app with the npx command.
b. run the build command and generate the bundle.
c. Take the build and add as assets to the android app.
d. Create a webview and refer the index.html to load.

this works well for the android 10 & 11. But when I try to run the same in android 5.0(lollypop), this does not work. Unable to load the app with multiple errors
a. SET is not supported.
b. require is not supported.
c. const is not supported in strict mode.

ASK: I need a configuration on top of the react-scripts that works for the android 5.0 (lollypop) webview broswer (it is chrome >37).

[ChristianMurphy]

Configuring supported browsers is documented here: https://create-react-app.dev/docs/supported-browsers-features/#configuring-supported-browsers

[kollachaitanyakrishna]

I tried this configuration, but unable to create the build that supports chorme 37 version that is available out of box of android 5.0.

[ChristianMurphy]

Can you share the actual browserslist config you tried?

Without seeing the config, at a high level, it sounds like it's either a problem with an incorrect browserslist configuration, or it could be that babel-preset-env may not know how to handle chrome android 37, which is something which the folks at https://github.com/babel/babel/discussions may be able to answer better.

[kollachaitanyakrishna]

"browserslist": {
"production": [
"chrome > 37",
"not dead",
"not op_mini all"
],
"development": [
"chrome > 37",
"last 1 firefox version",
"last 1 safari version"
]
},

[ChristianMurphy]

@kollachaitanyakrishna use https://github.com/browserslist/browserslist#debug to debug your browserslist list
for example with your current production list:

$ npx browserslist
and_chr 87
and_ff 83
and_qq 10.4
and_uc 12.12
android 81
baidu 7.12
chrome 87
chrome 86
edge 87
edge 86
firefox 84
firefox 83
firefox 78
ie 11
ios_saf 14.0-14.3
ios_saf 13.4-13.7
ios_saf 12.2-12.4
kaios 2.5
op_mini all
op_mob 59
opera 72
opera 71
safari 14
safari 13.1
samsung 13.0
samsung 12.0