Parse string export names by default (moduleStringNames)

[nicolo-ribaudo]

Q	A
Fixed Issues?
Patch: Bug Fix?
Major: Breaking Change?
Minor: New Feature?
Tests Added + Pass?	Yes
Documentation PR Link
Any Dependency Changes?
License	MIT

Ref: tc39/ecma262#2154

This syntax is effectively stage 4. It didn't go through the proposals process, but:

• It reached consensus in the Sept 2020 meeting, pending test262 tests and implementations
• It now has test262 tests
• It has been now implemented in different major engines (v8, SM and JSC)

[babel-bot]

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[nicolo-ribaudo]

Note that we don't have a plugin to transform this.

It would be possible to transform imports:

import { "a b" as x } from "mod";
x;

// ->

import * as _mod from "mod";
_mod["a b"];

but I think that exports are impossible to transpile.