Why is Babel Copying My Source File Instead of Compiling It?

Babel Compilation: Preventing Direct Copy

In the given code snippet, Babel is unable to transform the source file into a compiled output. Instead, it merely copies the original file. This occurs because Babel 6.x requires explicit configuration to specify the desired transformations.

To resolve this issue, install the babel-preset-env package via npm. This preset enables the compilation of all standard ES* behavior to ES5. Then, use the following command:

babel --presets env proxy.js --out-file proxified.js

Alternatively, create a .babelrc file with the following configuration:

{
  "presets": ["env"]
}

Running Babel with this configuration will apply the ES5 compilation, resolving the direct copy issue.

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