[runtime-corejs3] Only polyfill instance methods when it might be needed #9754
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This PR allows instance methods polyfills to specify on which base type they need to be applied. If Babel is 100% that it is called on another instance type, it will avoid polyfilling it.
For example,
"".concat
doesn't need to be polyfilled butfoo.concat
does becausefoo
might be an array.#9753 shows that polyfilling
.concat
breaks webpack logic to handlerequire
calls with template literals.Other instance methods could be optimized, but if this PR lands I'll leave it as a
[good first issue]
PR.