chore: Omit minified files and `sourcesContent` in published packages (#3755)

.changeset/purple-baboons-nail.md

···
+---
+'@urql/exchange-auth': patch
+'@urql/exchange-context': patch
+'@urql/exchange-execute': patch
+'@urql/exchange-graphcache': patch
+'@urql/exchange-persisted': patch
+'@urql/exchange-populate': patch
+'@urql/exchange-refocus': patch
+'@urql/exchange-request-policy': patch
+'@urql/exchange-retry': patch
+'@urql/exchange-throw-on-error': patch
+'@urql/core': patch
+'@urql/introspection': patch
+'@urql/next': patch
+'@urql/preact': patch
+'urql': patch
+'@urql/solid': patch
+'@urql/storage-rn': patch
+'@urql/svelte': patch
+'@urql/vue': patch
+---
+
+Omit minified files and sourcemaps' `sourcesContent` in published packages

scripts/rollup/config.mjs

···
 import * as settings from './settings.mjs';
 
 const plugins = makePlugins();
+const isCI = !!process.env.CI;
 
 const chunkFileNames = extension => {
   let hasDynamicChunk = false;
···
     exports: 'named',
     sourcemap: true,
     banner: chunk => (chunk.name === 'urql-next' ? '"use client"' : undefined),
-    sourcemapExcludeSources: false,
+    sourcemapExcludeSources: isCI,
     hoistTransitiveImports: false,
     indent: false,
     freeze: false,
···
     output: [
       output({ format: 'cjs', isProduction: false }),
       output({ format: 'esm', isProduction: false }),
-      output({ format: 'cjs', isProduction: true }),
-      output({ format: 'esm', isProduction: true }),
+      !isCI && output({ format: 'cjs', isProduction: true }),
+      !isCI && output({ format: 'esm', isProduction: true }),
     ].filter(Boolean),
   },
   {