fix: resolve TypeScript strict type checking errors

Co-authored-by: DevilTea <16652879+DevilTea@users.noreply.github.com>

Author: Copilot

packages/internal/src/shared/shared.ts

@@ -97,12 +97,18 @@ export class Pipe<I = unknown, O = I> {
 			if (result instanceof Promise) {
 				// Once we hit async, chain all remaining functions
 				for (let j = i; j < len; j++) {
-					result = result.then(fns[j])
+					const fn = fns[j]
+					if (fn) {
+						result = result.then(fn)
+					}
 				}
 				return result
 			}
 			// Execute function synchronously
-			result = fns[i](result)
+			const fn = fns[i]
+			if (fn) {
+				result = fn(result)
+			}
 		}
 		return result
 	}

packages/internal/src/steps/object/object.ts

@@ -138,7 +138,7 @@ export const object = implStepPlugin<PluginDef>({
 
 			// First pass: process synchronously until we hit async
 			for (let i = 0; i < keysLen; i++) {
-				const key = keys[i]
+				const key = keys[i]!
 				const isOptional = Array.isArray(struct[key]!)
 				const propSchema = Array.isArray(struct[key]!) ? struct[key]![0]! : struct[key]!
 				const propValue = (value as any)[key]
@@ -153,7 +153,7 @@ export const object = implStepPlugin<PluginDef>({
 
 					// Chain remaining properties
 					for (let j = i + 1; j < keysLen; j++) {
-						const nextKey = keys[j]
+						const nextKey = keys[j]!
 						const nextIsOptional = Array.isArray(struct[nextKey]!)
 						const nextPropSchema = Array.isArray(struct[nextKey]!) ? struct[nextKey]![0]! : struct[nextKey]!
 						const nextPropValue = (value as any)[nextKey]

packages/internal/src/steps/strictObject/strictObject.ts

@@ -159,7 +159,7 @@ export const strictObject = implStepPlugin<PluginDef>({
 
 			// First pass: process synchronously until we hit async
 			for (let i = 0; i < keysLen; i++) {
-				const key = keys[i]
+				const key = keys[i]!
 				const isOptional = Array.isArray(struct[key]!)
 				const propSchema = Array.isArray(struct[key]!) ? struct[key]![0]! : struct[key]!
 				const propValue = (value as any)[key]
@@ -174,7 +174,7 @@ export const strictObject = implStepPlugin<PluginDef>({
 
 					// Chain remaining properties
 					for (let j = i + 1; j < keysLen; j++) {
-						const nextKey = keys[j]
+						const nextKey = keys[j]!
 						const nextIsOptional = Array.isArray(struct[nextKey]!)
 						const nextPropSchema = Array.isArray(struct[nextKey]!) ? struct[nextKey]![0]! : struct[nextKey]!
 						const nextPropValue = (value as any)[nextKey]