let input = `let x, y, z, w;
x + y + z +   w;`

const plugins = [
  ({ types: t }) => ({
    visitor: {
      Program(path) {
        path.scope.rename("z", "a");
      },
    },
  }),
];

const outWithoutRanges = transformSync(input, {
  configFile: false,
  plugins,
  sourceMaps: true,
  generatorOpts: {
    sourceMapRanges: false,
  },
});

{
  version: 3,
  file: undefined,
  names: [ 'z' ],
  sourceRoot: undefined,
  sources: [ 'unknown' ],
  sourcesContent: [ 'let x, y, z, w;\nx + y + z +   w;' ],
  mappings: 'AAAA,QAAQ,EAAEA,CAAC;KACN,GAAGA,CAAC,GAAK,CAAC',
  ignoreList: undefined,
  rangeMappings: 'AD;D'
}