fix: sourcemap inline dist code, caused jest oom

[ycjcl868]

repo: ycjcl868/jest-terser-oom
ref: jestjs/jest#10534, webpack-contrib/terser-webpack-plugin#143
Close: #164 (comment)

If I removed the sourceMappingURL, the test case passed or caused out of memory.

If I removed the domprops, the test case passed too.

[fabiosantoscode]

Hello there!

As you know, source maps help display better stack traces. I don't know if removing them is the right option here.

Also, is this not a Jest issue? In this issue webpack-contrib/terser-webpack-plugin#143 Terser runs out of memory during transforming code. This issue is about a code transformer not being able to take a codebase of Terser's size. It is related, but it should be on the Jest repo perhaps.

[fabiosantoscode]

On second thought, it's almost 1mb. Let's ditch it indeed.

If you upgrade node, you'll have nice ES6 imports so no need for source maps.