$mol_error_match extracted

Author: zerkalica

error/match/match.ts

@@ -0,0 +1,53 @@
+namespace $ {
+	const recursion_protect = new WeakMap<Error, true>()
+
+	export function $mol_error_match< Instance >(
+		host: unknown,
+		is: (e: unknown) => boolean
+	): Instance | null {
+		
+		if( is(host) ) return host as Instance
+		if ( ! ( host instanceof Error ) ) return null
+		if (recursion_protect.get(host)) return null
+
+		recursion_protect.set(host, true)
+
+		let sub
+
+		if ( host instanceof AggregateError ) {
+			for( const e of host.errors ) {
+				sub = $mol_error_match< Instance >(e, is)
+				if (sub) break
+			}
+		}
+
+		if ( ! sub && ! ( host instanceof $mol_error_mix ) && Array.isArray(host.cause) ) {
+			for( const e of host.cause ) {
+				sub = $mol_error_match< Instance >(e, is)
+				if (sub) break
+			}
+		}
+
+		if (! sub) sub = $mol_error_match< Instance >(host.cause, is)
+
+		recursion_protect.delete(host)
+
+		return sub
+	}
+
+	export function $mol_error_match_all< Instance >(
+		host: unknown,
+		is: (e: unknown) => boolean
+	): readonly Instance[] {
+
+		const finded: Instance[] = []
+
+		$mol_error_match<Instance>(host, e => {
+			if (is( e )) finded.push(e as Instance)
+			return false
+		})
+
+		return finded
+	}
+
+}

error/mix/mix.test.ts

@@ -89,10 +89,5 @@ namespace $ {
 			$mol_assert_equal( mix.pick( MyError2 )?.message, 'my-error-2' )
 
 		},
-		
-		'pick all by class'() {
-			const { mix } = error_mock()
-			$mol_assert_equal( mix.pick_all( SyntaxError ).map(err => err.message), [ 'xxx1', 'xxx2', 'xxx4' ] )
-		},
 	})
 }

error/mix/mix.ts

@@ -21,77 +21,11 @@ namespace $ {
 			return this.errors.map( e => e.message )
 		}
 
-		static recursion_protect = new WeakMap<Error, true>()
-
-		static find< Instance >(
-			host: unknown,
-			is: (e: unknown) => boolean
-		): Instance | null {
-			
-			if( is(host) ) return host as Instance
-			if ( ! ( host instanceof Error ) ) return null
-			if (this.recursion_protect.get(host)) return null
-
-			this.recursion_protect.set(host, true)
-
-			let sub
-
-			if ( ! ( host instanceof $mol_error_mix ) && Array.isArray(host.cause) ) {
-				for( const e of host.cause ) {
-					sub = this.find< Instance >(e, is)
-					if (sub) break
-				}
-			}
-
-			if ( ! sub && host instanceof AggregateError ) {
-				for( const e of host.errors ) {
-					sub = this.find< Instance >(e, is)
-					if (sub) break
-				}
-			}
-
-			if (! sub) sub = this.find< Instance >(host.cause, is)
-
-			this.recursion_protect.delete(host)
-
-			return sub
-		}
-
-		static filter< Instance >(
-			host: unknown,
-			is: (e: unknown) => boolean
-		): readonly Instance[] {
-
-			const finded: Instance[] = []
-
-			this.find<Instance>(host, e => {
-				if (is( e )) finded.push(e as Instance)
-				return false
-			})
-
-			return finded
-		}
-
-		filter< Instance >( is: (e: unknown) => boolean ) {
-			return $mol_error_mix.filter<Instance>(this, is)
-		}
-
-		find< Instance >( is: (e: unknown) => boolean ) {
-			return $mol_error_mix.find<Instance>(this, is)
-		}
-
 		pick<
 			Instance extends Error,
 			Class extends new (...args: any[]) => Instance
 		>( Class: Class ) {
-			return this.find<Instance>(e => e instanceof Class)
-		}
-
-		pick_all<
-			Instance extends Error,
-			Class extends new (...args: any[]) => Instance
-		>( Class: Class ) {
-			return this.filter<Instance>(e => e instanceof Class)
+			return $mol_error_match<Instance>(this, e => e instanceof Class)
 		}
 
 	}