constBABEL_ENV=process.env.BABEL_ENV||process.env.NODE_ENV||null;constpresets=[['@babel/preset-env',{modules:false,targets:{ie:'11',},},],];// include stage 3 proposalsconstplugins=['@babel/plugin-syntax-dynamic-import','@babel/plugin-syntax-import-meta','@babel/plugin-proposal-class-properties','@babel/plugin-proposal-json-strings',];// add code coverage tooling if necessaryif(BABEL_ENV==='coverage'){plugins.push(['babel-plugin-istanbul',{exclude:['spec/javascripts/**/*','app/assets/javascripts/locale/**/app.js'],},]);}// add rewire support when running testsif(BABEL_ENV==='karma'||BABEL_ENV==='coverage'){plugins.push('babel-plugin-rewire');}module.exports={presets,plugins};