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Enable Development builds #13548

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14 changes: 9 additions & 5 deletions packages/react-scripts/scripts/build.js
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Original file line number Diff line number Diff line change
Expand Up @@ -9,8 +9,8 @@
'use strict';

// Do this as the first thing so that any code reading it knows the right env.
process.env.BABEL_ENV = 'production';
process.env.NODE_ENV = 'production';
process.env.NODE_ENV ||= 'production';
process.env.BABEL_ENV = process.env.NODE_ENV;

// Makes the script crash on unhandled rejections instead of silently
// ignoring them. In the future, promise rejections that are not handled will
Expand Down Expand Up @@ -55,7 +55,7 @@ const argv = process.argv.slice(2);
const writeStatsJson = argv.indexOf('--stats') !== -1;

// Generate configuration
const config = configFactory('production');
const config = configFactory(process.env.NODE_ENV);

// We require that you explicitly set browsers and do not fall back to
// browserslist defaults.
Expand Down Expand Up @@ -139,9 +139,13 @@ checkBrowsers(paths.appPath, isInteractive)
process.exit(1);
});

// Create the production build and print the deployment instructions.
// Create the build and print the deployment instructions.
function build(previousFileSizes) {
console.log('Creating an optimized production build...');
if (process.env.NODE_ENV === 'production') {
console.log('Creating an optimized production build...');
} else {
console.log(`Creating a ${process.env.NODE_ENV} build...`);
}

const compiler = webpack(config);
return new Promise((resolve, reject) => {
Expand Down