feat: make [hash] in chunk file names opt-in

Author: stipsan

src/node/core/config/types.ts

@@ -127,6 +127,12 @@ export interface PkgConfigOptions {
     treeshake?: TreeshakingOptions
     /** @alpha */
     experimentalLogSideEffects?: boolean
+    /**
+     * Adds [hash] to chunk filenames, generally only useful if `@sanity/pkg-utils` is used to deploy a package directly to a CDN.
+     * It's not needed when publishing to npm for consumption by other libraries, bundlers and frameworks.
+     * @defaultValue false
+     */
+    hashChunkFileNames?: boolean
   }
   /**
    * Default runtime of package exports

src/node/tasks/rollup/resolveRollupConfig.ts

@@ -194,12 +194,13 @@ export function resolveRollupConfig(
     outputOptions: {
       chunkFileNames: () => {
         const parts = outputExt.split('.')
+        const prefix = config?.rollup?.hashChunkFileNames ? '[name]-[hash]' : '[name]'
 
         if (parts.length === 3) {
-          return `_chunks/[name]-[hash].${parts[2]}`
+          return `_chunks/${prefix}.${parts[2]}`
         }
 
-        return `_chunks/[name]-[hash]${outputExt}`
+        return `_chunks/${prefix}${outputExt}`
       },
       compact: minify,
       dir: outDir,