babel 7 - how to prevent adding of “strict mode” [duplicate]

问题

This question already has answers here:

How to stop babel from transpiling 'this' to 'undefined' (and inserting “use strict”) (2 answers)

Closed 7 months ago.

I looked at many posts but still cannot get this to work :(

I have .babelrc

{
  "comments": false,
  "presets": [
    ["@babel/env", {
      "targets": {
        "browsers": ["ios 7"]
      }
    }],
    ["minify"]
  ]
}

I want to tell babel to not add "use strict" (anywhere)

How is this done ?

回答1:

Babel assumes by default that files being transformed are ES modules. Since that is not the case for you, you'll want to tell it that. You can check out the docs for the "sourceType" option, but essentially you want to add:

"sourceType": "script"

in your Babel options.

来源：https://stackoverflow.com/questions/52827968/babel-7-how-to-prevent-adding-of-strict-mode