babel: [babel-runtime] await is a reserved word failure on asyncGenerator.js

Bug

Webpack compilation now fails. It appears that asyncGenerator.js names a function await and that is now a failure with the most recent babel release. This appears to be generated from a babel-helpers template.

/node_modules/babel-runtime/helpers/asyncGenerator.js
Module build failed: SyntaxError: await is a reserved word (122:20)

  120 |       };
  121 |     },
> 122 |     await: function await(value) {
      |                     ^
  123 |       return new AwaitValue(value);
  124 |     }
  125 |   };

yarn list babel-runtime babel-helpers                                                                                                                                                                                    yarn list v0.24.6
├─ babel-helpers@6.24.1
├─ babel-runtime@6.23.0
└─ es-collections@0.0.2
   └─ babel-runtime@5.8.38

Input Code

Not applicable, failing on babel-runtime itself.

Babel Configuration (.babelrc, package.json, cli command)

{
  "presets": [
    [
      "env",
      {
        "targets": {
          "browsers": "> 5%"
        },
        "modules": false,
        "debug": true
      }
    ],
    "stage-2",
    "react"
  ],
  "plugins": [
    "react-hot-loader/babel",
    ["relay", {"compat": true, "schema": "./schema.json"}],
    "transform-flow-strip-types",
    ["lodash", { "id": ["lodash", "recompose"] }]
  ],
  "env": {
    "development": {
      "sourceMaps": "inline"
    }
  }
}

Expected Behavior

Doesn’t fail on babel-runtime

Current Behavior

Webpack compile fails as indicated above

Your Environment

software	version(s)
Babel-core	6.25.0
node	8.1.2
yarn	0.24.6
Operating System	OSX