refactor(val): reduce bundle size by implementing val and readonly va…

…l together

src/collections/list.ts

@@ -1,6 +1,6 @@
-import { readonlyVal } from "../readonly-val";
 import type { ReadonlyVal } from "../typings";
 import { strictEqual } from "../utils";
+import { readonlyVal } from "../val";
 
 /**
  * A reactive list. Similar to an Array except bracket-notation(e.g. `arr[0]`) is not allowed to get/set elements.

src/collections/map.ts

@@ -1,6 +1,6 @@
-import { readonlyVal } from "../readonly-val";
 import type { ReadonlyVal } from "../typings";
 import { strictEqual } from "../utils";
+import { readonlyVal } from "../val";
 
 /**
  * A reactive map inherited from `Map`.

src/collections/set.ts

@@ -1,5 +1,5 @@
-import { readonlyVal } from "../readonly-val";
 import type { ReadonlyVal } from "../typings";
+import { readonlyVal } from "../val";
 
 /**
  * A reactive set inherited from `Set`.

src/flatten-from.ts

@@ -6,14 +6,14 @@ import type {
   ValVersion,
 } from "./typings";
 
-import { ReadonlyValImpl } from "./readonly-val";
 import { Subscribers } from "./subscribers";
 import { INIT_VALUE, isVal, strictEqual } from "./utils";
+import { ValImpl } from "./val";
 
 class FlattenFromImpl<
   TValOrValue = any,
   TValue = UnwrapVal<TValOrValue>
-> extends ReadonlyValImpl<TValue> {
+> extends ValImpl<TValue> {
   public constructor(
     getValue: () => TValOrValue,
     listen: (handler: () => void) => ValDisposer | void | undefined,
@@ -26,7 +26,7 @@ class FlattenFromImpl<
     let notified = false;
 
     let innerMaybeVal: TValOrValue | undefined;
-    let innerVal: ReadonlyValImpl<TValue> | undefined | null;
+    let innerVal: ValImpl<TValue> | undefined | null;
     let innerDisposer: ValDisposer | undefined | null;
 
     const computeValue = (): TValue => {
@@ -57,7 +57,7 @@ class FlattenFromImpl<
       if (!strictEqual(maybeVal, innerMaybeVal)) {
         innerMaybeVal = maybeVal;
         innerVal = isVal(maybeVal)
-          ? (maybeVal as unknown as ReadonlyValImpl<TValue>)
+          ? (maybeVal as unknown as ValImpl<TValue>)
           : null;
         innerDisposer?.();
         innerDisposer = innerVal && innerVal.$valCompute(notify);

src/flatten.ts

@@ -1,5 +1,5 @@
-import type { ReadonlyValImpl } from "./readonly-val";
 import type { ReadonlyVal, UnwrapVal, ValConfig } from "./typings";
+import type { ValImpl } from "./val";
 
 import { flattenFrom } from "./flatten-from";
 import { identity } from "./utils";
@@ -50,7 +50,7 @@ export function flatten<TSrcValue = any, TValOrValue = any>(
 export function flatten<
   TSrcValue = any,
   TValOrValue = any,
-  TSrcVal extends ReadonlyValImpl = ReadonlyValImpl<TSrcValue>
+  TSrcVal extends ValImpl = ValImpl<TSrcValue>
 >(
   val: TSrcVal,
   get: (value: TSrcValue) => TValOrValue = identity as any,

src/from.ts

@@ -1,4 +1,3 @@
-import { ReadonlyValImpl } from "./readonly-val";
 import { Subscribers } from "./subscribers";
 import type {
   ReadonlyVal,
@@ -7,8 +6,9 @@ import type {
   ValVersion,
 } from "./typings";
 import { INIT_VALUE } from "./utils";
+import { ValImpl } from "./val";
 
-class FromImpl<TValue = any> extends ReadonlyValImpl<TValue> {
+class FromImpl<TValue = any> extends ValImpl<TValue> {
   public constructor(
     getValue: () => TValue,
     listen: (notify: () => void) => ValDisposer | void | undefined,

src/index.ts

@@ -1,3 +1,9 @@
+export { combine, type CombineValTransform } from "./combine";
+export { derive, type DerivedValTransform } from "./derive";
+export { flatten } from "./flatten";
+export { flattenFrom } from "./flatten-from";
+export { from } from "./from";
+export { nextTick } from "./scheduler";
 export type {
   FlattenVal,
   ReadonlyVal,
@@ -10,16 +16,6 @@ export type {
   ValSubscriber,
   ValVersion,
 } from "./typings";
-
-export { nextTick } from "./scheduler";
 export { arrayShallowEqual, identity, isVal, strictEqual } from "./utils";
-
-export { combine, type CombineValTransform } from "./combine";
-export { derive, type DerivedValTransform } from "./derive";
-export { flatten } from "./flatten";
-export { flattenFrom } from "./flatten-from";
-export { from } from "./from";
-export { groupVals, readonlyVal } from "./readonly-val";
-export { val } from "./val";
-
+export { groupVals, readonlyVal, val } from "./val";
 export { reaction, setValue, subscribe, unsubscribe } from "./value-enhancer";