spica - npm Package Compare versions

Comparing version 0.0.7 to 0.0.8

dist/spica.min.js

@@ -1,3 +0,3 @@
-/*! spica v0.0.7 https://github.com/falsandtru/spica | (c) 2016, falsandtru | undefined License (undefined) */
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package.json

 {
   "name": "spica",
-  "version": "0.0.7",
+  "version": "0.0.8",
   "description": "Supervisor, Observable, Sequence, Maybe, Either and some utils.",
@@ -5,0 +5,0 @@ "private": false,

src/lib/collection/datamap.ts

@@ -25,3 +25,3 @@ import {sqid} from '../sqid';
         }
-        if (key instanceof Array) {
+        if (Array.isArray(key)) {
           return `9:[ ${this.stringifyArray(<any[]>key)} ]`;
@@ -28,0 +28,0 @@ }

src/lib/monad/sequence.ts

@@ -5,2 +5,3 @@ import {Sequence} from './sequence/core';
 import random from './sequence/member/static/random';
+import concat from './sequence/member/static/concat';
 import zip from './sequence/member/static/zip';
@@ -16,3 +17,4 @@ import union from './sequence/member/static/union';
 import dropWhile from './sequence/member/instance/dropWhile';
-import until from './sequence/member/instance/until';
+import takeUntil from './sequence/member/instance/takeUntil';
+import dropUntil from './sequence/member/instance/dropUntil';
 import fmap from './sequence/member/instance/fmap';
@@ -32,2 +34,3 @@ import bind from './sequence/member/instance/bind';
   random,
+  concat,
   zip,
@@ -43,3 +46,4 @@ union,
   dropWhile,
-  until,
+  takeUntil,
+  dropUntil,
   fmap,
@@ -46,0 +50,0 @@ bind,

src/lib/monad/sequence/core.ts

@@ -12,3 +12,3 @@ import {Monad} from '../monad';
 export namespace Sequence {
-  export declare function from<T>(as: T[]): Sequence<T, T>;
+  export declare function from<T>(as: T[]): Sequence<T, number>;
   export declare function write<T>(as: T[]): Sequence<T, T[]>;
@@ -18,2 +18,5 @@ export declare function random(): Sequence<number, number>;
   export declare function random<T>(as: T[]): Sequence<T, Sequence.Iterator<number>>;
+  export declare function concat<T>(ss: Sequence<T, any>[]): Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]>;
+  export declare function concat<T>(ss: Sequence<Sequence<T, any>, any>): Sequence<T, [Sequence.Iterator<T[]>, Sequence.Iterator<T>]>;
+  export declare function concat<T>(ss: Sequence<T[], any>): Sequence<T, [Sequence.Iterator<T[]>, Sequence.Iterator<T>]>;
   export declare function zip<T, U>(a: Sequence<T, any>, b: Sequence<U, any>): Sequence<[T, U], [Sequence.Iterator<T>, Sequence.Iterator<U>]>;
@@ -24,4 +27,4 @@ export declare function union<T>(cmp: (a: T, b: T) => number, ss: Sequence<T, any>[]): Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]>;
 export interface Sequence<T, S> {
+  iterate(): Sequence.Thunk<T>;
   read(): T[];
-  iterate(): Sequence.Thunk<T>;
   fmap<U>(f: (p: T) => U): Sequence<U, Sequence.Iterator<T>>;
@@ -36,5 +39,6 @@ bind<U>(f: (p: T) => Sequence<U, any>): Sequence<U, [Sequence.Iterator<T>, Sequence.Iterator<U>]>;
   drop(n: number): Sequence<T, Sequence.Iterator<T>>;
-  takeWhile(f: (p: T, i: number) => boolean): Sequence<T, Sequence.Iterator<T>>;
-  dropWhile(f: (p: T, i: number) => boolean): Sequence<T, Sequence.Iterator<T>>;
-  until(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
+  takeWhile(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
+  dropWhile(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
+  takeUntil(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
+  dropUntil(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
   memoize(memory?: Map<number, Sequence.Data<T, S>>): Sequence<T, S>;
@@ -44,16 +48,17 @@ }
 export namespace Sequence {
-  export function cons<T, S>(value?: T, next?: S): Sequence.Data<T, S> {
-    switch (arguments.length) {
-      case 0:
-        return <Sequence.Data<T, S>>[];
-      case 1:
-        return <Sequence.Data<T, S>><[]>[value];
-      case 2:
-        return <Sequence.Data<T, S>>[value, next];
-      default:
-        throw Sequence.Exception.invalidConsError(arguments);
+  export type Data<T, S> = [T, S];
+  export namespace Data {
+    export function cons<T, S>(value?: T, next?: S): Sequence.Data<T, S> {
+      switch (arguments.length) {
+        case 0:
+          return <Sequence.Data<T, S>>[];
+        case 1:
+          return <Sequence.Data<T, S>><[]>[value];
+        case 2:
+          return <Sequence.Data<T, S>>[value, next];
+        default:
+          throw Sequence.Exception.invalidConsError(arguments);
+      }
     }
   }
-
-  export type Data<T, S> = [T, S];
   export type Thunk<T> = [T, Iterator<T>, number];
@@ -60,0 +65,0 @@ export namespace Thunk {

src/lib/monad/sequence/member/instance/bind.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -9,0 +7,0 @@ describe('bind', () => {

src/lib/monad/sequence/member/instance/bind.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -4,0 +3,0 @@ export default class <T, S> extends Sequence<T, S> {

src/lib/monad/sequence/member/instance/drop.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -9,0 +7,0 @@ describe('drop', () => {

src/lib/monad/sequence/member/instance/drop.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
 export default class <T, S> extends Sequence<T, S> {
   public drop(n: number): Sequence<T, Sequence.Iterator<T>> {
-    return this.dropWhile((_, i) => i < n);
+    return new Sequence<T, Sequence.Iterator<T>>((iter = () => this.iterate(), cons) =>
+      Sequence.Iterator.when(
+        iter(),
+        () => cons(),
+        (thunk, recur) =>
+          Sequence.Thunk.index(thunk) < n
+            ? recur()
+            : cons(Sequence.Thunk.value(thunk), Sequence.Thunk.iterator(thunk))));
   }
 }

src/lib/monad/sequence/member/instance/dropWhile.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -58,3 +56,3 @@ describe('dropWhile', () => {
 
-    it('0 take', () => {
+    it('0', () => {
       assert.deepStrictEqual(
@@ -68,3 +66,3 @@ nat
 
-    it('1 take', () => {
+    it('1', () => {
       assert.deepStrictEqual(
@@ -78,3 +76,3 @@ nat
 
-    it('2 take', () => {
+    it('2', () => {
       assert.deepStrictEqual(
@@ -81,0 +79,0 @@ nat

src/lib/monad/sequence/member/instance/dropWhile.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
 export default class <T, S> extends Sequence<T, S> {
-  public dropWhile(f: (p: T, i: number) => boolean): Sequence<T, Sequence.Iterator<T>> {
+  public dropWhile(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>> {
     return new Sequence<T, Sequence.Iterator<T>>((iter = () => this.iterate(), cons) =>
@@ -11,3 +10,3 @@ Sequence.Iterator.when(
         (thunk, recur) =>
-          f(Sequence.Thunk.value(thunk), Sequence.Thunk.index(thunk))
+          f(Sequence.Thunk.value(thunk))
             ? recur()
@@ -14,0 +13,0 @@ : cons(Sequence.Thunk.value(thunk), Sequence.Thunk.iterator(thunk))));

src/lib/monad/sequence/member/instance/filter.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -9,0 +7,0 @@ describe('filter', () => {

src/lib/monad/sequence/member/instance/filter.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -4,0 +3,0 @@ export default class <T, S> extends Sequence<T, S> {

src/lib/monad/sequence/member/instance/filterM.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -9,0 +7,0 @@ describe('filterM', () => {

src/lib/monad/sequence/member/instance/filterM.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 import {concat} from '../../../../concat';
@@ -4,0 +3,0 @@

src/lib/monad/sequence/member/instance/fmap.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -9,0 +7,0 @@ describe('fmap', () => {

src/lib/monad/sequence/member/instance/fmap.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -9,5 +8,5 @@ export default class <T, S> extends Sequence<T, S> {
         iter(),
-        () => Sequence.cons<U, Sequence.Iterator<T>>(),
-        thunk => Sequence.cons<U, Sequence.Iterator<T>>(f(Sequence.Thunk.value(thunk)), Sequence.Thunk.iterator(thunk))));
+        () => Sequence.Data.cons<U, Sequence.Iterator<T>>(),
+        thunk => Sequence.Data.cons<U, Sequence.Iterator<T>>(f(Sequence.Thunk.value(thunk)), Sequence.Thunk.iterator(thunk))));
   }
 }

src/lib/monad/sequence/member/instance/iterate.test.ts

 import {Sequence} from '../../../sequence';
 
 describe('Unit: lib/monad/sequence/member/iterate', () => {
-  const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
-
   describe('iterate', () => {
@@ -9,0 +5,0 @@ it('', () => {

src/lib/monad/sequence/member/instance/iterate.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -12,4 +11,4 @@ export default class <T, S> extends Sequence<T, S> {
         ? this.memory.get(i)
-        : this.memory.set(i, this.cons(p, Sequence.cons)).get(i)
-      : this.cons(p, Sequence.cons);
+        : this.memory.set(i, this.cons(p, Sequence.Data.cons)).get(i)
+      : this.cons(p, Sequence.Data.cons);
     switch (data.length) {
@@ -16,0 +15,0 @@ case 0:

src/lib/monad/sequence/member/instance/map.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -9,0 +7,0 @@ describe('map', () => {

src/lib/monad/sequence/member/instance/map.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -9,5 +8,5 @@ export default class <T, S> extends Sequence<T, S> {
         iter(),
-        () => Sequence.cons<U, Sequence.Iterator<T>>(),
-        thunk => Sequence.cons<U, Sequence.Iterator<T>>(f(Sequence.Thunk.value(thunk), Sequence.Thunk.index(thunk)), Sequence.Thunk.iterator(thunk))));
+        () => Sequence.Data.cons<U, Sequence.Iterator<T>>(),
+        thunk => Sequence.Data.cons<U, Sequence.Iterator<T>>(f(Sequence.Thunk.value(thunk), Sequence.Thunk.index(thunk)), Sequence.Thunk.iterator(thunk))));
   }
 }

src/lib/monad/sequence/member/instance/mapM.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -9,0 +7,0 @@ describe('mapM', () => {

src/lib/monad/sequence/member/instance/mapM.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 import {concat} from '../../../../concat';
@@ -4,0 +3,0 @@

src/lib/monad/sequence/member/instance/memoize.test.ts

 import {Sequence} from '../../../sequence';
 
 describe('Unit: lib/monad/sequence/member/memoize', () => {
-  const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
-
   describe('memoize', () => {
@@ -9,0 +5,0 @@ it('write unmemoized', () => {

src/lib/monad/sequence/member/instance/memoize.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -4,0 +3,0 @@ export default class <T, S> extends Sequence<T, S> {

src/lib/monad/sequence/member/instance/read.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 import {concat} from '../../../../concat';
@@ -4,0 +3,0 @@

src/lib/monad/sequence/member/instance/scan.test.ts

 import {Sequence} from '../../../sequence';
 
 describe('Unit: lib/monad/sequence/member/scan', () => {
-  const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
-
   describe('scan', () => {
@@ -9,0 +5,0 @@ it('0', () => {

src/lib/monad/sequence/member/instance/scan.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -9,5 +8,5 @@ export default class <T, S> extends Sequence<T, S> {
         iter(),
-        () => Sequence.cons<U, [U, Sequence.Iterator<T>]>(),
+        () => Sequence.Data.cons<U, [U, Sequence.Iterator<T>]>(),
         thunk =>
-          Sequence.cons<U, [U, Sequence.Iterator<T>]>(
+          Sequence.Data.cons<U, [U, Sequence.Iterator<T>]>(
             prev = f(prev, Sequence.Thunk.value(thunk)),
@@ -14,0 +13,0 @@ [prev, Sequence.Thunk.iterator(thunk)])));

src/lib/monad/sequence/member/instance/take.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -9,0 +7,0 @@ describe('take', () => {

src/lib/monad/sequence/member/instance/take.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
 export default class <T, S> extends Sequence<T, S> {
   public take(n: number): Sequence<T, Sequence.Iterator<T>> {
-    return this.takeWhile((_, i) => i < n);
+    return new Sequence<T, Sequence.Iterator<T>>((iter = () => this.iterate(), cons) =>
+      Sequence.Iterator.when(
+        iter(),
+        () => cons(),
+        thunk =>
+          Sequence.Thunk.index(thunk) < n
+            ? cons(Sequence.Thunk.value(thunk), Sequence.Thunk.iterator(thunk))
+            : cons()));
   }
 }

src/lib/monad/sequence/member/instance/takeWhile.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -66,3 +64,3 @@ describe('takeWhile', () => {
 
-    it('1 take', () => {
+    it('1', () => {
       assert.deepStrictEqual(
@@ -75,3 +73,3 @@ nat
 
-    it('2 take', () => {
+    it('2', () => {
       assert.deepStrictEqual(
@@ -84,3 +82,3 @@ nat
 
-    it('1 all', () => {
+    it('3', () => {
       assert.deepStrictEqual(
@@ -87,0 +85,0 @@ nat

src/lib/monad/sequence/member/instance/takeWhile.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
 export default class <T, S> extends Sequence<T, S> {
-  public takeWhile(f: (p: T, i: number) => boolean): Sequence<T, Sequence.Iterator<T>> {
+  public takeWhile(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>> {
     return new Sequence<T, Sequence.Iterator<T>>((iter = () => this.iterate(), cons) =>
@@ -11,3 +10,3 @@ Sequence.Iterator.when(
         thunk =>
-          f(Sequence.Thunk.value(thunk), Sequence.Thunk.index(thunk))
+          f(Sequence.Thunk.value(thunk))
             ? cons(Sequence.Thunk.value(thunk), Sequence.Thunk.iterator(thunk))
@@ -14,0 +13,0 @@ : cons()));

src/lib/monad/sequence/member/static/from.test.ts

 import {Sequence} from '../../../sequence';
 
 describe('Unit: lib/monad/sequence/member/static/from', () => {
-  const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
-
   describe('Sequence.from', () => {
@@ -9,0 +5,0 @@ it('array', () => {

src/lib/monad/sequence/member/static/from.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -4,0 +3,0 @@ export default class <T, S> extends Sequence<T, S> {

src/lib/monad/sequence/member/static/intersect.test.ts

@@ -29,6 +29,6 @@ import {Sequence} from '../../../sequence';
       assert.deepStrictEqual(
-        Sequence.intersect((a, b) => a - b, [double.dropWhile(n => n < 6).until(n => n === 12), triple]).take(2).read(),
+        Sequence.intersect((a, b) => a - b, [double.dropWhile(n => n < 6).takeUntil(n => n === 12), triple]).take(2).read(),
         [6, 12]);
       assert.deepStrictEqual(
-        Sequence.intersect((a, b) => a - b, [triple, double.dropWhile(n => n < 6).until(n => n === 12)]).take(2).read(),
+        Sequence.intersect((a, b) => a - b, [triple, double.dropWhile(n => n < 6).takeUntil(n => n === 12)]).take(2).read(),
         [6, 12]);
@@ -35,0 +35,0 @@ });

src/lib/monad/sequence/member/static/intersect.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -7,20 +6,20 @@ export default class <T, S> extends Sequence<T, S> {
     return ss.reduce((a, b) => intersect(cmp, a, b));
+  }
+}
 
-    function intersect<T>(cmp: (a: T, b: T) => number, a: Sequence<T, any>, b: Sequence<T, any>): Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]> {
-      return new Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]>(([ai, bi] = [() => a.iterate(), () => b.iterate()], cons) =>
+function intersect<T>(cmp: (a: T, b: T) => number, a: Sequence<T, any>, b: Sequence<T, any>): Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]> {
+  return new Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]>(([ai, bi] = [() => a.iterate(), () => b.iterate()], cons) =>
+    Sequence.Iterator.when(
+      ai(),
+      () => cons(),
+      (at, ar) =>
         Sequence.Iterator.when(
-          ai(),
+          bi(),
           () => cons(),
-          (at, ar) =>
-            Sequence.Iterator.when(
-              bi(),
-              () => cons(),
-              (bt, br) => {
-                const result = cmp(Sequence.Thunk.value(at), Sequence.Thunk.value(bt));
-                if (result < 0) return bi = () => bt, ar();
-                if (result > 0) return br();
-                return cons(Sequence.Thunk.value(at), [Sequence.Thunk.iterator(at), Sequence.Thunk.iterator(bt)]);
-              })));
-    }
-  }
+          (bt, br) => {
+            const result = cmp(Sequence.Thunk.value(at), Sequence.Thunk.value(bt));
+            if (result < 0) return bi = () => bt, ar();
+            if (result > 0) return br();
+            return cons(Sequence.Thunk.value(at), [Sequence.Thunk.iterator(at), Sequence.Thunk.iterator(bt)]);
+          })));
 }

src/lib/monad/sequence/member/static/random.test.ts

 import {Sequence} from '../../../sequence';
 
 describe('Unit: lib/monad/sequence/member/static/random', () => {
-  const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
-
   describe('Sequence.random', () => {
@@ -9,0 +5,0 @@ it('number', () => {

src/lib/monad/sequence/member/static/random.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -4,0 +3,0 @@ export default class <T, S> extends Sequence<T, S> {

src/lib/monad/sequence/member/static/union.test.ts

@@ -29,6 +29,6 @@ import {Sequence} from '../../../sequence';
       assert.deepStrictEqual(
-        Sequence.union((a, b) => a - b, [double.dropWhile(n => n < 6).until(n => n === 12), triple]).take(8).read(),
+        Sequence.union((a, b) => a - b, [double.dropWhile(n => n < 6).takeUntil(n => n === 12), triple]).take(8).read(),
         [0, 3, 6, 8, 9, 10, 12, 15]);
       assert.deepStrictEqual(
-        Sequence.union((a, b) => a - b, [triple, double.dropWhile(n => n < 6).until(n => n === 12)]).take(8).read(),
+        Sequence.union((a, b) => a - b, [triple, double.dropWhile(n => n < 6).takeUntil(n => n === 12)]).take(8).read(),
         [0, 3, 6, 8, 9, 10, 12, 15]);
@@ -35,0 +35,0 @@ });

src/lib/monad/sequence/member/static/union.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -7,24 +6,24 @@ export default class <T, S> extends Sequence<T, S> {
     return ss.reduce((a, b) => union(cmp, a, b));
+  }
+}
 
-    function union<T>(cmp: (a: T, b: T) => number, a: Sequence<T, any>, b: Sequence<T, any>): Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]> {
-      return new Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]>(([ai, bi] = [() => a.iterate(), () => b.iterate()], cons) =>
+function union<T>(cmp: (a: T, b: T) => number, a: Sequence<T, any>, b: Sequence<T, any>): Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]> {
+  return new Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]>(([ai, bi] = [() => a.iterate(), () => b.iterate()], cons) =>
+    Sequence.Iterator.when(
+      ai(),
+      () =>
         Sequence.Iterator.when(
-          ai(),
-          () =>
-            Sequence.Iterator.when(
-              bi(),
-              () => cons(),
-              bt => cons(Sequence.Thunk.value(bt), [Sequence.Iterator.done, Sequence.Thunk.iterator(bt)])),
-          at =>
-            Sequence.Iterator.when(
-              bi(),
-              () => cons(Sequence.Thunk.value(at), [Sequence.Thunk.iterator(at), Sequence.Iterator.done]),
-              bt => {
-                const result = cmp(Sequence.Thunk.value(at), Sequence.Thunk.value(bt));
-                if (result < 0) return cons(Sequence.Thunk.value(at), [Sequence.Thunk.iterator(at), () => bt]);
-                if (result > 0) return cons(Sequence.Thunk.value(bt), [() => at, Sequence.Thunk.iterator(bt)]);
-                return cons(Sequence.Thunk.value(at), [Sequence.Thunk.iterator(at), Sequence.Thunk.iterator(bt)]);
-              })));
-    }
-  }
+          bi(),
+          () => cons(),
+          bt => cons(Sequence.Thunk.value(bt), [Sequence.Iterator.done, Sequence.Thunk.iterator(bt)])),
+      at =>
+        Sequence.Iterator.when(
+          bi(),
+          () => cons(Sequence.Thunk.value(at), [Sequence.Thunk.iterator(at), Sequence.Iterator.done]),
+          bt => {
+            const result = cmp(Sequence.Thunk.value(at), Sequence.Thunk.value(bt));
+            if (result < 0) return cons(Sequence.Thunk.value(at), [Sequence.Thunk.iterator(at), bi]);
+            if (result > 0) return cons(Sequence.Thunk.value(bt), [ai, Sequence.Thunk.iterator(bt)]);
+            return cons(Sequence.Thunk.value(at), [Sequence.Thunk.iterator(at), Sequence.Thunk.iterator(bt)]);
+          })));
 }

src/lib/monad/sequence/member/static/write.test.ts

 import {Sequence} from '../../../sequence';
 
 describe('Unit: lib/monad/sequence/member/static/write', () => {
-  const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
-
   describe('Sequence.write', () => {
@@ -9,0 +5,0 @@ it('array', () => {

src/lib/monad/sequence/member/static/write.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -4,0 +3,0 @@ export default class <T, S> extends Sequence<T, S> {

src/lib/monad/sequence/member/static/zip.test.ts

@@ -5,4 +5,2 @@ import {Sequence} from '../../../sequence';
   const nat = new Sequence<number, number>((n = 0, cons) => cons(n, n + 1));
-  const double = nat.map(n => n * 2);
-  const triple = nat.map(n => n * 3);
 
@@ -9,0 +7,0 @@ describe('Sequence.zip', () => {

src/lib/monad/sequence/member/static/zip.ts

 import {Sequence} from '../../core';
-import {compose} from '../../../../compose';
 
@@ -4,0 +3,0 @@ export default class <T, S> extends Sequence<T, S> {

src/lib/observable.ts

@@ -78,3 +78,3 @@ import {Observer, Publisher} from 'spica';
     void this.emit(namespace, <D>data, (_, r) => results = r);
-    assert(results instanceof Array);
+    assert(Array.isArray(results));
     return results;
@@ -81,0 +81,0 @@ }

typings/spica.d.ts

@@ -85,3 +85,3 @@ /**
   export class Sequence<T, S> extends Monad<T> {
-    static from<T>(as: T[]): Sequence<T, T>;
+    static from<T>(as: T[]): Sequence<T, number>;
     static write<T>(as: T[]): Sequence<T, T[]>;
@@ -92,7 +92,10 @@ static random(): Sequence<number, number>;
     static zip<T, U>(a: Sequence<T, any>, b: Sequence<U, any>): Sequence<[T, U], [Sequence.Iterator<T>, Sequence.Iterator<U>]>;
+    static concat<T>(ss: Sequence<T, any>[]): Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]>;
+    static concat<T>(ss: Sequence<Sequence<T, any>, any>): Sequence<T, [Sequence.Iterator<T[]>, Sequence.Iterator<T>]>;
+    static concat<T>(ss: Sequence<T[], any>): Sequence<T, [Sequence.Iterator<T[]>, Sequence.Iterator<T>]>;
     static union<T>(cmp: (a: T, b: T) => number, ss: Sequence<T, any>[]): Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]>;
     static intersect<T>(cmp: (a: T, b: T) => number, ss: Sequence<T, any>[]): Sequence<T, [Sequence.Iterator<T>, Sequence.Iterator<T>]>;
     constructor(cons: (p: S, cons: (value?: T, next?: S) => Sequence.Data<T, S>) => Sequence.Data<T, S>);
+    iterate(): Sequence.Thunk<T>;
     read(): T[];
-    iterate(): Sequence.Thunk<T>;
     fmap<U>(f: (p: T) => U): Sequence<U, Sequence.Iterator<T>>;
@@ -107,5 +110,6 @@ bind<U>(f: (p: T) => Sequence<U, any>): Sequence<U, [Sequence.Iterator<T>, Sequence.Iterator<U>]>;
     drop(n: number): Sequence<T, Sequence.Iterator<T>>;
-    takeWhile(f: (p: T, i: number) => boolean): Sequence<T, Sequence.Iterator<T>>;
-    dropWhile(f: (p: T, i: number) => boolean): Sequence<T, Sequence.Iterator<T>>;
-    until(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
+    takeWhile(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
+    dropWhile(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
+    takeUntil(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
+    dropUntil(f: (p: T) => boolean): Sequence<T, Sequence.Iterator<T>>;
     memoize(memory?: Map<number, Sequence.Data<T, S>>): Sequence<T, S>;
@@ -112,0 +116,0 @@ }

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Improved metrics

Total package byte prevSize

301589

increased by3.67%

Number of package files

109

increased by3.81%

Lines of code

7950

increased by3.54%

No dependency changes