Fails to parse object division in ternary alternate: `weird ? true : {}/2`

Bug Report

• I would like to work on a fix!

Current Behavior Fails to parse two useless but valid pieces of JavaScript.

Input Code

Case 1:

weird ? true : {}/2;

Unterminated regular expression (1:18)

Case 2:

weird ? true : {}/2/g;

Unexpected token, expected ";" (1:17)

Note: When adding parentheses parsing succeeds:

weird ? true : ({}/2);

But Babel’s output is:

weird ? true : {} / 2;

Which means that Babel cannot parse its output.

Moving {}/2 to the consequent of the ternary parses:

weird ? {}/2 : true;

Expected behavior/code They should parse. For example Node.js, Firefox and TypeScript accept them.

Babel Configuration (babel.config.js, .babelrc, package.json#babel, cli command, .eslintrc) Defaults.

Environment

  System:
    OS: Linux 5.3 Ubuntu 19.10 (Eoan Ermine)
  Binaries:
    Node: 13.11.0 - /home/linuxbrew/.linuxbrew/bin/node
    Yarn: 1.22.4 - /home/linuxbrew/.linuxbrew/bin/yarn
    npm: 6.13.7 - /home/linuxbrew/.linuxbrew/bin/npm
  npmPackages:
    @babel/parser: 7.9.4 => 7.9.4 
    eslint: 6.8.0 => 6.8.0 
    jest: 25.2.3 => 25.2.3 

[oliverdunk]

Just wanted to say that I haven’t forgotten about this one. https://github.com/babel/babel/pull/11404 has been taking my focus, but I hope to tackle this soon.

[oliverdunk]

Could I take this one? ✋