@ts-common/iterator - npm Package Compare versions

Comparing version 0.1.0 to 0.1.1

dist/index.d.ts

@@ -22,2 +22,3 @@ import { Tuple2 } from "@ts-common/tuple";
 export declare const take: <T>(input: Iterable<T> | undefined, n?: number) => Iterable<T>;
+export declare const findEntry: <T>(input: Iterable<T> | undefined, func: (v: T, i: number) => boolean) => Tuple2<number, T> | undefined;
 export declare const find: <T>(input: Iterable<T> | undefined, func: (v: T, i: number) => boolean) => T | undefined;
@@ -24,0 +25,0 @@ export declare const flatMap: <T, I>(input: Iterable<I> | undefined, func: (v: I, i: number) => Iterable<T>) => Iterable<T>;

dist/index.js

@@ -6,2 +6,4 @@ "use strict";
 exports.entry = tuple_1.tuple2;
+const ENTRY_KEY = 0;
+const ENTRY_VALUE = 1;
 exports.entries = (input) => exports.iterable(function* () {
@@ -53,8 +55,8 @@ // tslint:disable-next-line:no-if-statement
 exports.take = (input, n = 1) => exports.takeWhile(input, (_, i) => i < n);
-exports.find = (input, func) => {
+exports.findEntry = (input, func) => {
     // tslint:disable-next-line:no-loop-statement
-    for (const [index, value] of exports.entries(input)) {
+    for (const e of exports.entries(input)) {
         // tslint:disable-next-line:no-if-statement
-        if (func(value, index)) {
-            return value;
+        if (func(e[ENTRY_VALUE], e[ENTRY_KEY])) {
+            return e;
         }
@@ -64,2 +66,6 @@ }
 };
+exports.find = (input, func) => {
+    const e = exports.findEntry(input, func);
+    return e === undefined ? undefined : e[ENTRY_VALUE];
+};
 exports.flatMap = (input, func) => exports.flatten(exports.map(input, func));
@@ -88,3 +94,3 @@ exports.optionalToArray = (v) => v === undefined ? [] : [v];
 exports.last = (input) => exports.reduce(input, (_, v) => v);
-exports.some = (input, func) => exports.find(input, func) !== undefined;
+exports.some = (input, func) => exports.findEntry(input, func) !== undefined;
 exports.every = (input, func) => !exports.some(input, (v, i) => !func(v, i));
@@ -146,3 +152,3 @@ exports.forEach = (input, func) =>
 exports.reverse = (i) => exports.fold(i, (a, b) => [b, ...a], new Array());
-exports.isEmpty = (i) => exports.find(i, () => true) === undefined;
+exports.isEmpty = (i) => !exports.some(i, () => true);
 exports.join = (i, separator) => {
@@ -149,0 +155,0 @@ const result = exports.reduce(i, (a, b) => a + separator + b);

package.json

 {
   "name": "@ts-common/iterator",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "description": "Iterator library for JavaScript and TypeScript",
@@ -26,3 +26,3 @@ "main": "dist/index.js",
     "prepack": "npm install && tsc",
-    "test": "tsc && npm run tslint && nyc mocha ./dist/test/*.js --reporter mocha-junit-reporter"
+    "test": "tsc && npm run tslint && nyc mocha ./dist/test/*.js --reporter mocha-multi-reporters --reporter-options configFile=mocha-reporters.json"
   },
@@ -55,2 +55,3 @@ "repository": {
     "mocha-junit-reporter": "^1.18.0",
+    "mocha-multi-reporters": "^1.1.7",
     "nyc": "^13.1.0",
@@ -57,0 +58,0 @@ "tslint": "^5.11.0",

src/index.ts

@@ -23,2 +23,5 @@ import { Tuple2, tuple2 } from "@ts-common/tuple"
 
+const ENTRY_KEY = 0
+const ENTRY_VALUE = 1
+
 export const entries = <T>(input: Iterable<T>|undefined): Iterable<Entry<T>> =>
@@ -90,11 +93,11 @@ iterable(function *(): Iterator<Entry<T>> {
 
-export const find = <T>(
+export const findEntry =  <T>(
     input: Iterable<T>|undefined,
     func: (v: T, i: number) => boolean,
-): T|undefined => {
+): Entry<T>|undefined => {
     // tslint:disable-next-line:no-loop-statement
-    for (const [index, value] of entries(input)) {
+    for (const e of entries(input)) {
         // tslint:disable-next-line:no-if-statement
-        if (func(value, index)) {
-            return value
+        if (func(e[ENTRY_VALUE], e[ENTRY_KEY])) {
+            return e
         }
@@ -105,2 +108,10 @@ }
 
+export const find = <T>(
+    input: Iterable<T>|undefined,
+    func: (v: T, i: number) => boolean,
+): T|undefined => {
+    const e = findEntry(input, func)
+    return e === undefined ? undefined : e[ENTRY_VALUE]
+}
+
 export const flatMap = <T, I>(
@@ -170,3 +181,3 @@ input: Iterable<I>|undefined,
 ): boolean =>
-    find(input, func) !== undefined
+    findEntry(input, func) !== undefined
 
@@ -258,3 +269,3 @@ export const every = <T>(
 export const isEmpty = <T>(i: Iterable<T>|undefined): boolean =>
-    find(i, () => true) === undefined
+    !some(i, () => true)
 
@@ -261,0 +272,0 @@ export const join = (i: Iterable<string>|undefined, separator: string): string => {

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Improved metrics

Total package byte prevSize

41145

increased by2.45%

Lines of code

432

increased by3.85%

Worsened metrics

Dev dependency count

10

increased by11.11%

No dependency changes