[Feature Request] Dead code elimination for assert statements in production builds #574
Description
Describe the feature
It would be useful to have an option to strip assert statements during production builds, similar to how other languages handle assertions (e.g., Python's -O flag, C's NDEBUG).
Use case:
import assert from 'assert';
function divide(a, b) {
assert(b !== 0, 'Division by zero');
return a / b;
}
In development, assertions help catch bugs early. In production, they add unnecessary overhead and bundle size.
Proposed solution:
A configuration option in .swcrc:
{
"jsc": {
"transform": {
"optimizer": {
"removeAsserts": true
}
}
}
}
Or via define to replace assert with a no-op that can be tree-shaken.
Alternatives considered:
Using process.env.NODE_ENV checks manually
Babel plugin (babel-plugin-unassert)
Custom SWC plugin
Babel plugin or link to the feature description
No response
Additional context
No response