v2

node_modules/zod/compile.js

@@ -0,0 +1,52 @@
+// Side-effect-only: installs the post-processor on `globalConfig`. Listed in `package.json`'s `sideEffects`, and nothing else references it, so apps that never import it drop the compiler.
+//
+// Usage:
+//
+//   import "zod/compile";
+//   import * as z from "zod";
+//   // every schema constructed below this is compiled on first parse
+//
+// Module evaluation order matters: schemas constructed in modules that evaluate before this import will not be compiled. Place this import in the app entry point, before any module that constructs schemas at top level.
+//
+// Failure handling: if the compiler refuses a schema (async refinement, unsupported feature, etc.) the shim permanently restores the runtime `_zod.run` for that schema. The schema continues to work via the regular runtime parser — no observable difference to the caller.
+import { compile } from "./v4/core/compile.js";
+import * as core from "./v4/core/index.js";
+let compiling = false;
+core.globalConfig.postProcessor = (inst) => {
+    if (compiling)
+        return;
+    const originalRun = inst._zod?.run;
+    if (typeof originalRun !== "function")
+        return;
+    const shim = (payload, ctx) => {
+        // Bypass the fast path for any non-forward / non-sync / check-skipping call. The runtime owns those contracts.
+        if (ctx?.async || ctx?.direction === "backward" || ctx?.skipChecks) {
+            return originalRun(payload, ctx);
+        }
+        compiling = true;
+        try {
+            // Respect the jitless config: it exists precisely so CSP/no-eval environments never reach `new Function`. Global mode must not bypass it (explicit z.compile calls remain an explicit opt-in).
+            if (core.globalConfig.jitless) {
+                inst._zod.run = originalRun;
+                return originalRun(payload, ctx);
+            }
+            // Strict: the shim owns its own fallback below, and a non-strict compile would hand back `inst` — whose run is this shim — and reinstall it on itself.
+            const compiled = compile(inst, { strict: true });
+            // Only the run wrapper. Copying the compiled parse/safeParse closures would make their fallback re-enter this instance and run user callbacks a third time.
+            inst._zod.run = compiled._zod.run;
+            inst._zod.bag.fallbackRun = compiled._zod.bag.fallbackRun;
+            inst._zod.bag.validator = compiled._zod.bag.validator;
+        }
+        catch {
+            // Permanent fallback for unsupported schemas.
+            inst._zod.run = originalRun;
+        }
+        finally {
+            compiling = false;
+        }
+        return inst._zod.run(payload, ctx);
+    };
+    // Expose the pre-shim runtime so `compile()` invoked elsewhere can unwrap past the shim and capture the source-of-truth runtime. Without this, a user calling `z.compile(s)` after global mode is enabled would capture the shim itself, which would feed the wrapper into itself on fallback.
+    shim.__originalRun = originalRun;
+    inst._zod.run = shim;
+};