Unify Derivation and Prism 2/n

packages/dataverse/src/Atom.ts

@@ -2,7 +2,7 @@ import get from 'lodash-es/get'
 import isPlainObject from 'lodash-es/isPlainObject'
 import last from 'lodash-es/last'
 import type {Prism} from './derivations/IDerivation'
-import {isDerivation} from './derivations/IDerivation'
+import {isPrism} from './derivations/IDerivation'
 import type {Pointer, PointerType} from './pointer'
 import {isPointer} from './pointer'
 import pointer, {getPointerMeta} from './pointer'
@@ -323,7 +323,7 @@ export const val = <
   : unknown => {
   if (isPointer(input)) {
     return valueDerivation(input).getValue() as $IntentionalAny
-  } else if (isDerivation(input)) {
+  } else if (isPrism(input)) {
     return input.getValue() as $IntentionalAny
   } else {
     return input as $IntentionalAny

packages/dataverse/src/derivations/IDerivation.ts

@@ -10,7 +10,7 @@ export interface Prism<V> {
   /**
    * Whether the object is a derivation.
    */
-  isDerivation: true
+  isPrism: true
 
   /**
    * Whether the derivation is hot.
@@ -63,6 +63,6 @@ export interface Prism<V> {
 /**
  * Returns whether `d` is a derivation.
  */
-export function isDerivation(d: any): d is Prism<unknown> {
-  return d && d.isDerivation && d.isDerivation === true
+export function isPrism(d: any): d is Prism<unknown> {
+  return d && d.isPrism && d.isPrism === true
 }

packages/dataverse/src/derivations/iterateAndCountTicks.ts

@@ -2,7 +2,7 @@ import {valueDerivation} from '../Atom'
 import type {Pointer} from '../pointer'
 import {isPointer} from '../pointer'
 import type {Prism} from './IDerivation'
-import {isDerivation} from './IDerivation'
+import {isPrism} from './IDerivation'
 
 export default function* iterateAndCountTicks<V>(
   pointerOrDerivation: Prism<V> | Pointer<V>,
@@ -10,7 +10,7 @@ export default function* iterateAndCountTicks<V>(
   let d
   if (isPointer(pointerOrDerivation)) {
     d = valueDerivation(pointerOrDerivation) as Prism<V>
-  } else if (isDerivation(pointerOrDerivation)) {
+  } else if (isPrism(pointerOrDerivation)) {
     d = pointerOrDerivation
   } else {
     throw new Error(`Only pointers and derivations are supported`)

packages/dataverse/src/derivations/iterateOver.ts

@@ -3,7 +3,7 @@ import type {Pointer} from '../pointer'
 import {isPointer} from '../pointer'
 import Ticker from '../Ticker'
 import type {Prism} from './IDerivation'
-import {isDerivation} from './IDerivation'
+import {isPrism} from './IDerivation'
 
 export default function* iterateOver<V>(
   pointerOrDerivation: Prism<V> | Pointer<V>,
@@ -11,7 +11,7 @@ export default function* iterateOver<V>(
   let d
   if (isPointer(pointerOrDerivation)) {
     d = valueDerivation(pointerOrDerivation) as Prism<V>
-  } else if (isDerivation(pointerOrDerivation)) {
+  } else if (isPrism(pointerOrDerivation)) {
     d = pointerOrDerivation
   } else {
     throw new Error(`Only pointers and derivations are supported`)

packages/dataverse/src/derivations/prism/prism.ts

@@ -2,7 +2,7 @@ import type Ticker from '../../Ticker'
 import type {$IntentionalAny, VoidFn} from '../../types'
 import Stack from '../../utils/Stack'
 import type {Prism} from '../IDerivation'
-import {isDerivation} from '../IDerivation'
+import {isPrism} from '../IDerivation'
 import {
   startIgnoringDependencies,
   stopIgnoringDependencies,
@@ -202,7 +202,7 @@ class PrismDerivation<V> implements Prism<V> {
   /**
    * Whether the object is a derivation.
    */
-  readonly isDerivation: true = true
+  readonly isPrism: true = true
 
   private _state:
     | {hot: false; handle: undefined}
@@ -703,7 +703,7 @@ function inPrism(): boolean {
 const possibleDerivationToValue = <P extends Prism<$IntentionalAny> | unknown>(
   input: P,
 ): P extends Prism<infer T> ? T : P => {
-  if (isDerivation(input)) {
+  if (isPrism(input)) {
     return input.getValue() as $IntentionalAny
   } else {
     return input as $IntentionalAny

packages/dataverse/src/index.ts

@@ -8,7 +8,7 @@ export type {IdentityDerivationProvider} from './Atom'
 export {default as Atom, val, valueDerivation} from './Atom'
 export {default as Box} from './Box'
 export type {IBox} from './Box'
-export {isDerivation} from './derivations/IDerivation'
+export {isPrism} from './derivations/IDerivation'
 export type {Prism} from './derivations/IDerivation'
 export {default as iterateAndCountTicks} from './derivations/iterateAndCountTicks'
 export {default as iterateOver} from './derivations/iterateOver'