Drop JIT in Zod Mini z.object() (reduces bundle size by 20%) (#5051)

colinhacks · web-flow · commit 571ab0c3dbf2 · 2025-08-05T21:14:41.000-07:00
* WIP

* WIP

* No comments
diff --git a/packages/bench/index.ts b/packages/bench/index.ts
@@ -6,8 +6,8 @@ async function run() {
   const files = process.argv[2].split(",").map((file) => import.meta.resolve(`./${file}`).replace("file://", ""));
 
   for (const file of files) {
-    // await $`pnpm tsx --conditions @zod/source ${file}`;
-    await $`pnpm tsx ${file}`;
+    await $`pnpm tsx --conditions @zod/source ${file}`;
+    // await $`pnpm tsx ${file}`;
   }
 }
 
diff --git a/packages/bench/object-moltar.ts b/packages/bench/object-moltar.ts
@@ -3,42 +3,42 @@ import * as z4lib from "zod4/v4";
 import * as z3 from "zod3";
 import { metabench } from "./metabench.js";
 
-const z3Schema = z3.object({
+const z3Schema = z3.strictObject({
   number: z3.number(),
   negNumber: z3.number(),
   maxNumber: z3.number(),
   string: z3.string(),
   longString: z3.string(),
   boolean: z3.boolean(),
-  deeplyNested: z3.object({
+  deeplyNested: z3.strictObject({
     foo: z3.string(),
     num: z3.number(),
     bool: z3.boolean(),
   })
 })
 
-const z4LibSchema = z4lib.object({
+const z4LibSchema = z4lib.strictObject({
   number: z4lib.number(),
   negNumber: z4lib.number(),
   maxNumber: z4lib.number(),
   string: z4lib.string(),
   longString: z4lib.string(),
   boolean: z4lib.boolean(),
-  deeplyNested: z4lib.object({
+  deeplyNested: z4lib.strictObject({
     foo: z4lib.string(),
     num: z4lib.number(),
     bool: z4lib.boolean(),
   }),
 });
 
-const z4Schema = z4.object({
+const z4Schema = z4.strictObject({
   number: z4.number(),
   negNumber: z4.number(),
   maxNumber: z4.number(),
   string: z4.string(),
   longString: z4.string(),
   boolean: z4.boolean(),
-  deeplyNested: z4.object({
+  deeplyNested: z4.strictObject({
     foo: z4.string(),
     num: z4.number(),
     bool: z4.boolean(),
diff --git a/packages/treeshake/package.json b/packages/treeshake/package.json
@@ -6,7 +6,7 @@
   "scripts": {
     "bundle": "rollup -c rollup.config.js --input",
     "bundle:rollup": "rollup --input",
-    "bundle:esbuild": "esbuild --bundle ./in.ts --outfile=./out.js --bundle --format=esm"
+    "bundle:esbuild": "esbuild --bundle ./in.ts --conditions=@zod/source --outfile=./out.js --bundle --format=esm"
   },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^28.0.3",
diff --git a/packages/treeshake/rollup.config.js b/packages/treeshake/rollup.config.js
@@ -14,14 +14,10 @@ export default {
     // sourcemap: true, // Generate sourcemaps for easier debugging
   },
   plugins: [
-    resolve({
-      
-    }), // Resolve node_modules
+    resolve(), // Resolve node_modules
     commonjs(), // Convert CommonJS modules to ES6
     typescript(), // Compile TypeScript
-    // bundleSize(),
     filesize(), // Display bundle size
-    // terser(),
   ],
   treeshake: {
     preset: "smallest",
diff --git a/packages/zod/src/v4/classic/schemas.ts b/packages/zod/src/v4/classic/schemas.ts
@@ -1148,7 +1148,7 @@ export interface ZodObject<
 }
 
 export const ZodObject: core.$constructor<ZodObject> = /*@__PURE__*/ core.$constructor("ZodObject", (inst, def) => {
-  core.$ZodObject.init(inst, def);
+  core.$ZodObjectJIT.init(inst, def);
   ZodType.init(inst, def);
 
   util.defineLazy(inst, "shape", () => def.shape);
diff --git a/packages/zod/src/v4/core/schemas.ts b/packages/zod/src/v4/core/schemas.ts

Original file line number	Diff line number	Diff line change
`@@ -6,8 +6,8 @@ async function run() {`
`6`	`6`	const files = process.argv[2].split(",").map((file) => import.meta.resolve(`./${file}`).replace("file://", ""));
`7`	`7`
`8`	`8`	`for (const file of files) {`
`9`		- // await $`pnpm tsx --conditions @zod/source ${file}`;
`10`		- await $`pnpm tsx ${file}`;
	`9`	+ await $`pnpm tsx --conditions @zod/source ${file}`;
	`10`	+ // await $`pnpm tsx ${file}`;
`11`	`11`	`}`
`12`	`12`	`}`
`13`	`13`
Original file line number	Diff line number	Diff line change
`@@ -1148,7 +1148,7 @@ export interface ZodObject<`
`1148`	`1148`	`}`
`1149`	`1149`
`1150`	`1150`	`export const ZodObject: core.$constructor<ZodObject> = /@__PURE__/ core.$constructor("ZodObject", (inst, def) => {`
`1151`		`- core.$ZodObject.init(inst, def);`
	`1151`	`+ core.$ZodObjectJIT.init(inst, def);`
`1152`	`1152`	`ZodType.init(inst, def);`
`1153`	`1153`
`1154`	`1154`	`util.defineLazy(inst, "shape", () => def.shape);`