No need to create an array to call concat

* Demux handles arrays by key

* Rename construct

* version

* Minor changes to types

README.md

@@ -1,15 +1,13 @@
-# Mhysa
+# Strom 
 
 **Dependency-free stream utils for Node.js**
 
-<sub>Released under the [MIT](https://github.com/Wenzil/Mhysa/blob/master/LICENSE) license.</sub>
+<sub>Released under the [MIT](https://git.lewis.id/strom/blob/master/LICENSE) license.</sub>
 
 ```sh
-yarn add mhysa
+yarn add strom  // Name TBD
 ```
 
-<sub>Tested with Node.js versions 8+</sub>
-
 ## fromArray(array)
 Convert an array into a `Readable` stream of its elements
 
@@ -18,7 +16,7 @@ Convert an array into a `Readable` stream of its elements
 | `array` | `T[]` | Array of elements to stream |
 
 ```js
-Mhysa.fromArray(["a", "b"])
+strom.fromArray(["a", "b"])
     .pipe(process.stdout);
 // ab is printed out
 ```
@@ -35,8 +33,8 @@ Return a `ReadWrite` stream that maps streamed chunks
 | `options.writableObjectMode` | `boolean` | Whether this stream should behave as a writable stream of objects |
 
 ```js
-Mhysa.fromArray(["a", "b"])
-    .pipe(Mhysa.map(s => s.toUpperCase()))
+strom.fromArray(["a", "b"])
+    .pipe(strom.map(s => s.toUpperCase()))
     .pipe(process.stdout);
 // AB is printed out
 ```
@@ -53,8 +51,8 @@ Return a `ReadWrite` stream that flat maps streamed chunks
 | `options.writableObjectMode` | `boolean` | Whether this stream should behave as a writable stream of objects |
 
 ```js
-Mhysa.fromArray(["a", "AA"])
-    .pipe(Mhysa.flatMap(s => new Array(s.length).fill(s)))
+strom.fromArray(["a", "AA"])
+    .pipe(strom.flatMap(s => new Array(s.length).fill(s)))
     .pipe(process.stdout);
 // aAAAA is printed out
 ```
@@ -70,8 +68,8 @@ Return a `ReadWrite` stream that filters out streamed chunks for which the predi
 | `options.objectMode` | `boolean` | `boolean` | Whether this stream should behave as a stream of objects |
 
 ```js
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.filter(s => s !== "b"))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.filter(s => s !== "b"))
     .pipe(process.stdout);
 // ac is printed out
 ```
@@ -90,9 +88,9 @@ value
 | `options.writableObjectMode` | `boolean` | Whether this stream should behave as a writable stream of objects |
 
 ```js
-Mhysa.fromArray(["a", "b", "cc"])
-    .pipe(Mhysa.reduce((acc, s) => ({ ...acc, [s]: s.length }), {}))
-    .pipe(Mhysa.stringify())
+strom.fromArray(["a", "b", "cc"])
+    .pipe(strom.reduce((acc, s) => ({ ...acc, [s]: s.length }), {}))
+    .pipe(strom.stringify())
     .pipe(process.stdout);
 // {"a":1,"b":1","c":2} is printed out
 ```
@@ -108,9 +106,9 @@ Return a `ReadWrite` stream that splits streamed chunks using the given separato
 | `options.encoding` | `string` | Character encoding to use for decoding chunks. Defaults to utf8
 
 ```js
-Mhysa.fromArray(["a,b", "c,d"])
-    .pipe(Mhysa.split(","))
-    .pipe(Mhysa.join("|"))
+strom.fromArray(["a,b", "c,d"])
+    .pipe(strom.split(","))
+    .pipe(strom.join("|"))
     .pipe(process.stdout);
 // a|bc|d is printed out
 ```
@@ -126,8 +124,8 @@ Return a `ReadWrite` stream that joins streamed chunks using the given separator
 | `options.encoding` | `string` | Character encoding to use for decoding chunks. Defaults to utf8
 
 ```js
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.join(","))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.join(","))
     .pipe(process.stdout);
 // a,b,c is printed out
 ```
@@ -145,8 +143,8 @@ the streamed chunks with the specified replacement string
 | `options.encoding` | `string` | Character encoding to use for decoding chunks. Defaults to utf8
 
 ```js
-Mhysa.fromArray(["a1", "b22", "c333"])
-    .pipe(Mhysa.replace(/b\d+/, "B"))
+strom.fromArray(["a1", "b22", "c333"])
+    .pipe(strom.replace(/b\d+/, "B"))
     .pipe(process.stdout);
 // a1Bc333 is printed out
 ```
@@ -156,8 +154,8 @@ Mhysa.fromArray(["a1", "b22", "c333"])
 Return a `ReadWrite` stream that parses the streamed chunks as JSON
 
 ```js
-Mhysa.fromArray(['{ "a": "b" }'])
-    .pipe(Mhysa.parse())
+strom.fromArray(['{ "a": "b" }'])
+    .pipe(strom.parse())
     .once("data", object => console.log(object));
 // { a: 'b' } is printed out
 ```
@@ -167,8 +165,8 @@ Mhysa.fromArray(['{ "a": "b" }'])
 Return a `ReadWrite` stream that stringifies the streamed chunks to JSON
 
 ```js
-Mhysa.fromArray([{ a: "b" }])
-    .pipe(Mhysa.stringify())
+strom.fromArray([{ a: "b" }])
+    .pipe(strom.stringify())
     .pipe(process.stdout);
 // {"a":"b"} is printed out
 ```
@@ -183,8 +181,8 @@ Return a `ReadWrite` stream that collects streamed chunks into an array or buffe
 | `options.objectMode` | `boolean` | Whether this stream should behave as a stream of objects |
 
 ```js
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.collect({ objectMode: true }))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.collect({ objectMode: true }))
     .once("data", object => console.log(object));
 // [ 'a', 'b', 'c' ] is printed out
 ```
@@ -200,7 +198,7 @@ Return a `Readable` stream of readable streams concatenated together
 ```js
 const source1 = new Readable();
 const source2 = new Readable();
-Mhysa.concat(source1, source2).pipe(process.stdout)
+strom.concat(source1, source2).pipe(process.stdout)
 source1.push("a1 ");
 source2.push("c3 ");
 source1.push("b2 ");
@@ -221,7 +219,7 @@ Return a `Readable` stream of readable streams merged together in chunk arrival
 ```js
 const source1 = new Readable({ read() {} });
 const source2 = new Readable({ read() {} });
-Mhysa.merge(source1, source2).pipe(process.stdout);
+strom.merge(source1, source2).pipe(process.stdout);
 source1.push("a1 ");
 setTimeout(() => source2.push("c3 "), 10);
 setTimeout(() => source1.push("b2 "), 20);
@@ -243,8 +241,8 @@ cause the given readable stream to yield chunks
 
 ```js
 const catProcess = require("child_process").exec("grep -o ab");
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.duplex(catProcess.stdin, catProcess.stdout))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.duplex(catProcess.stdin, catProcess.stdout))
     .pipe(process.stdout);
 // ab is printed out
 ```
@@ -259,8 +257,8 @@ Return a `Duplex` stream from a child process' stdin and stdout
 
 ```js
 const catProcess = require("child_process").exec("grep -o ab");
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.child(catProcess))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.child(catProcess))
     .pipe(process.stdout);
 // ab is printed out
 ```
@@ -276,8 +274,8 @@ ended
 
 ```js
 let f = async () => {
-    const source = Mhysa.fromArray(["a", "b", "c"]);
-    console.log(await Mhysa.last(source));
+    const source = strom.fromArray(["a", "b", "c"]);
+    console.log(await strom.last(source));
 };
 f();
 // c is printed out

package.json

@@ -1,17 +1,16 @@
 {
-    "name": "@jogogo/mhysa",
-    "version": "2.0.0-alpha.3",
-    "description": "Streams and event emitter utils for Node.js",
+    "name": "strom",
+    "version": "2.0.0",
+    "description": "Streams utils for Node.js",
     "keywords": [
         "promise",
         "stream",
-        "event emitter",
         "utils"
     ],
-    "author": {
+    "contributors": [
+        {
             "name": "Wenzil"
         },
-    "contributors": [
         {
             "name": "jerry",
             "email": "jerry@jogogo.co"
@@ -27,18 +26,16 @@
     "files": [
         "dist"
     ],
-    "publishConfig": {
-        "registry": "https://npm.dev.jogogo.co/"
-    },
     "repository": {
-        "url": "git@github.com:Jogogoplay/mhysa.git",
+        "url": "git@git.lewis.id:ldiamond/strom.git",
         "type": "git"
     },
     "scripts": {
         "test": "ava",
         "lint": "tslint -p tsconfig.json",
         "validate:tslint": "tslint-config-prettier-check ./tslint.json",
-        "prepublishOnly": "yarn lint && yarn test && yarn tsc -d"
+        "prepublishOnly": "yarn lint && yarn test && yarn tsc -d",
+        "prepare": "tsc"
     },
     "dependencies": {},
     "devDependencies": {

samples/async.js

@@ -1,8 +1,8 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.map(s => Promise.resolve(s + s)))
-    .pipe(Mhysa.flatMap(s => Promise.resolve([s, s.toUpperCase()])))
-    .pipe(Mhysa.filter(s => Promise.resolve(s !== "bb")))
-    .pipe(Mhysa.join(","))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.map(s => Promise.resolve(s + s)))
+    .pipe(strom.flatMap(s => Promise.resolve([s, s.toUpperCase()])))
+    .pipe(strom.filter(s => Promise.resolve(s !== "bb")))
+    .pipe(strom.join(","))
     .pipe(process.stdout);

samples/child.js

@@ -1,6 +1,6 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 const catProcess = require("child_process").exec("grep -o ab");
 
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.child(catProcess))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.child(catProcess))
     .pipe(process.stdout);

samples/collect.js

@@ -1,5 +1,5 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.collect({ objectMode: true }))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.collect({ objectMode: true }))
     .on("data", object => console.log(object));

samples/concat.js

@@ -1,9 +1,9 @@
 const { Readable } = require("stream");
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
 const source1 = new Readable();
 const source2 = new Readable();
-Mhysa.concat(source1, source2).pipe(process.stdout);
+strom.concat(source1, source2).pipe(process.stdout);
 source1.push("a1 ");
 source2.push("c3 ");
 source1.push("b2 ");

samples/duplex.js

@@ -1,6 +1,6 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 const catProcess = require("child_process").exec("grep -o ab");
 
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.duplex(catProcess.stdin, catProcess.stdout))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.duplex(catProcess.stdin, catProcess.stdout))
     .pipe(process.stdout);

samples/filter.js

@@ -1,6 +1,6 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.filter(s => s !== "b"))
-    .pipe(Mhysa.join(","))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.filter(s => s !== "b"))
+    .pipe(strom.join(","))
     .pipe(process.stdout);

samples/flatMap.js

@@ -1,6 +1,6 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(["a", "AA"])
-    .pipe(Mhysa.flatMap(s => new Array(s.length).fill(s)))
-    .pipe(Mhysa.join(","))
+strom.fromArray(["a", "AA"])
+    .pipe(strom.flatMap(s => new Array(s.length).fill(s)))
+    .pipe(strom.join(","))
     .pipe(process.stdout);

samples/join.js

@@ -1,5 +1,5 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(["a", "b", "c"])
-    .pipe(Mhysa.join(","))
+strom.fromArray(["a", "b", "c"])
+    .pipe(strom.join(","))
     .pipe(process.stdout);

samples/last.js

@@ -1,7 +1,7 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
 let f = async () => {
-    const source = Mhysa.fromArray(["a", "b", "c"]);
-    console.log(await Mhysa.last(source));
+    const source = strom.fromArray(["a", "b", "c"]);
+    console.log(await strom.last(source));
 };
 f();

samples/map.js

@@ -1,6 +1,6 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(["a", "b"])
-    .pipe(Mhysa.map(s => s.toUpperCase()))
-    .pipe(Mhysa.join(","))
+strom.fromArray(["a", "b"])
+    .pipe(strom.map(s => s.toUpperCase()))
+    .pipe(strom.join(","))
     .pipe(process.stdout);

samples/merge.js

@@ -1,9 +1,9 @@
 const { Readable } = require("stream");
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
 const source1 = new Readable({ read() {} });
 const source2 = new Readable({ read() {} });
-Mhysa.merge(source1, source2).pipe(process.stdout);
+strom.merge(source1, source2).pipe(process.stdout);
 source1.push("a1 ");
 setTimeout(() => source2.push("c3 "), 10);
 setTimeout(() => source1.push("b2 "), 20);

samples/parse.js

@@ -1,5 +1,5 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(['{ "a": "b" }'])
-    .pipe(Mhysa.parse())
+strom.fromArray(['{ "a": "b" }'])
+    .pipe(strom.parse())
     .on("data", object => console.log(object));

samples/reduce.js

@@ -1,6 +1,6 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(["a", "b", "cc"])
-    .pipe(Mhysa.reduce((acc, s) => ({ ...acc, [s]: s.length }), {}))
-    .pipe(Mhysa.stringify())
+strom.fromArray(["a", "b", "cc"])
+    .pipe(strom.reduce((acc, s) => ({ ...acc, [s]: s.length }), {}))
+    .pipe(strom.stringify())
     .pipe(process.stdout);

samples/replace.js

@@ -1,5 +1,5 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(["a1", "b22", "c333"])
-    .pipe(Mhysa.replace(/b\d+/, "B"))
+strom.fromArray(["a1", "b22", "c333"])
+    .pipe(strom.replace(/b\d+/, "B"))
     .pipe(process.stdout);

samples/split.js

@@ -1,6 +1,6 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray(["a,b", "c,d"])
-    .pipe(Mhysa.split(","))
-    .pipe(Mhysa.join("|"))
+strom.fromArray(["a,b", "c,d"])
+    .pipe(strom.split(","))
+    .pipe(strom.join("|"))
     .pipe(process.stdout);

samples/stringify.js

@@ -1,5 +1,5 @@
-const Mhysa = require("mhysa");
+const strom = require("strom").strom();
 
-Mhysa.fromArray([{ a: "b" }])
-    .pipe(Mhysa.stringify())
+strom.fromArray([{ a: "b" }])
+    .pipe(strom.stringify())
     .pipe(process.stdout);

src/functions/demux.ts

@@ -9,30 +9,42 @@ export interface DemuxOptions extends DuplexOptions {
 }
 
 export function demux(
-    construct: (destKey?: string, chunk?: any) => DemuxStreams,
+    pipelineConstructor: (
+        destKey?: string,
+        chunk?: any,
+    ) => DemuxStreams | DemuxStreams[],
     demuxBy: string | ((chunk: any) => string),
     options?: DemuxOptions,
 ): Duplex {
-    return new Demux(construct, demuxBy, options);
+    return new Demux(pipelineConstructor, demuxBy, options);
 }
 
 class Demux extends Duplex {
     private streamsByKey: {
-        [key: string]: DemuxStreams;
+        [key: string]: DemuxStreams[];
     };
     private demuxer: (chunk: any) => string;
-    private construct: (destKey?: string, chunk?: any) => DemuxStreams;
+    private pipelineConstructor: (
+        destKey?: string,
+        chunk?: any,
+    ) => DemuxStreams[];
     private remultiplex: boolean;
     private transform: Transform;
     constructor(
-        construct: (destKey?: string) => DemuxStreams,
+        pipelineConstructor: (
+            destKey?: string,
+            chunk?: any,
+        ) => DemuxStreams | DemuxStreams[],
         demuxBy: string | ((chunk: any) => string),
         options: DemuxOptions = {},
     ) {
         super(options);
         this.demuxer =
             typeof demuxBy === "string" ? chunk => chunk[demuxBy] : demuxBy;
-        this.construct = construct;
+        this.pipelineConstructor = (destKey: string, chunk?: any) => {
+            const pipeline = pipelineConstructor(destKey, chunk);
+            return Array.isArray(pipeline) ? pipeline : [pipeline];
+        };
         this.remultiplex =
             options.remultiplex === undefined ? true : options.remultiplex;
         this.streamsByKey = {};
@@ -53,43 +65,66 @@ class Demux extends Duplex {
     public async _write(chunk: any, encoding: any, cb: any) {
         const destKey = this.demuxer(chunk);
         if (this.streamsByKey[destKey] === undefined) {
-            const newPipeline = await this.construct(destKey, chunk);
-            this.streamsByKey[destKey] = newPipeline;
+            const newPipelines = this.pipelineConstructor(destKey, chunk);
+            this.streamsByKey[destKey] = newPipelines;
+
+            newPipelines.forEach(newPipeline => {
                 if (this.remultiplex && isReadable(newPipeline)) {
-                (newPipeline as NodeJS.ReadWriteStream).pipe(this.transform);
+                    (newPipeline as NodeJS.ReadWriteStream).pipe(
+                        this.transform,
+                    );
                 } else if (this.remultiplex) {
                     console.error(
                         `Pipeline construct for ${destKey} does not implement readable interface`,
                     );
                 }
-        }
-
-        if (!this.streamsByKey[destKey].write(chunk, encoding)) {
-            this.streamsByKey[destKey].once("drain", () => {
-                cb();
             });
-        } else {
-            cb();
         }
+        const pipelines = this.streamsByKey[destKey];
+        const pendingDrains: Array<Promise<any>> = [];
+
+        pipelines.forEach(pipeline => {
+            if (!pipeline.write(chunk, encoding)) {
+                pendingDrains.push(
+                    new Promise(resolve => {
+                        pipeline.once("drain", () => {
+                            resolve();
+                        });
+                    }),
+                );
+            }
+        });
+        await Promise.all(pendingDrains);
+        cb();
     }
 
     public _flush() {
-        const pipelines = Object.values(this.streamsByKey);
-        let totalEnded = 0;
+        const pipelines: DemuxStreams[] = Array.prototype.concat.apply(
+            [],
+            Object.values(this.streamsByKey),
+        );
+        const flushPromises: Array<Promise<void>> = [];
         pipelines.forEach(pipeline => {
+            flushPromises.push(
+                new Promise(resolve => {
                     pipeline.once("end", () => {
-                totalEnded++;
-                if (pipelines.length === totalEnded) {
-                    this.push(null);
-                    this.emit("end");
-                }
+                        resolve();
                     });
+                }),
+            );
         });
         pipelines.forEach(pipeline => pipeline.end());
+        Promise.all(flushPromises).then(() => {
+            this.push(null);
+            this.emit("end");
+        });
     }
 
     public _destroy(error: any, cb: (error?: any) => void) {
-        const pipelines = Object.values(this.streamsByKey);
+        const pipelines: DemuxStreams[] = [].concat.apply(
+            [],
+            Object.values(this.streamsByKey),
+        );
         pipelines.forEach(p => (p as any).destroy());
         cb(error);
     }

src/functions/index.ts

@@ -28,7 +28,7 @@ import { unbatch } from "./unbatch";
 import { compose } from "./compose";
 import { demux } from "./demux";
 
-export default function mhysa(defaultOptions?: TransformOptions) {
+export function strom(defaultOptions: TransformOptions = { objectMode: true }) {
     function withDefaultOptions<T extends any[], R>(
         n: number,
         fn: (...args: T) => R,

src/index.ts

@@ -1,6 +1,2 @@
-import mhysa from "./functions";
-import * as _utils from "./utils";
-export default mhysa;
-
-// @TODO fix this with proper import export
-export const utils = { ..._utils };
+export { strom } from "./functions";
+export * from "./utils";

tests/accumulator.spec.ts

@@ -1,10 +1,10 @@
 import test from "ava";
 import { expect } from "chai";
 import { Readable } from "stream";
-import mhysa from "../src";
+import { strom } from "../src";
 import { FlushStrategy } from "../src/functions/accumulator";
 import { performance } from "perf_hooks";
-const { accumulator, accumulatorBy } = mhysa({ objectMode: true });
+const { accumulator, accumulatorBy } = strom({ objectMode: true });
 
 test.cb("accumulator() rolling", t => {
     t.plan(3);
@@ -14,8 +14,14 @@ test.cb("accumulator() rolling", t => {
         key: string;
     }
     const source = new Readable({ objectMode: true });
-    const firstFlush = [{ ts: 0, key: "a" }, { ts: 1, key: "b" }];
-    const secondFlush = [{ ts: 2, key: "d" }, { ts: 3, key: "e" }];
+    const firstFlush = [
+        { ts: 0, key: "a" },
+        { ts: 1, key: "b" },
+    ];
+    const secondFlush = [
+        { ts: 2, key: "d" },
+        { ts: 3, key: "e" },
+    ];
     const thirdFlush = [{ ts: 4, key: "f" }];
     const flushes = [firstFlush, secondFlush, thirdFlush];
 
@@ -88,7 +94,10 @@ test.cb(
             "nonExistingKey",
             { objectMode: true },
         );
-        const input = [{ ts: 0, key: "a" }, { ts: 1, key: "b" }];
+        const input = [
+            { ts: 0, key: "a" },
+            { ts: 1, key: "b" },
+        ];
 
         source
             .pipe(accumulatorStream)
@@ -182,7 +191,10 @@ test.cb("accumulator() sliding", t => {
         { ts: 4, key: "d" },
     ];
     const firstFlush = [{ ts: 0, key: "a" }];
-    const secondFlush = [{ ts: 0, key: "a" }, { ts: 1, key: "b" }];
+    const secondFlush = [
+        { ts: 0, key: "a" },
+        { ts: 1, key: "b" },
+    ];
     const thirdFlush = [
         { ts: 0, key: "a" },
         { ts: 1, key: "b" },
@@ -232,7 +244,10 @@ test.cb("accumulator() sliding with key", t => {
         { ts: 6, key: "g" },
     ];
     const firstFlush = [{ ts: 0, key: "a" }];
-    const secondFlush = [{ ts: 0, key: "a" }, { ts: 1, key: "b" }];
+    const secondFlush = [
+        { ts: 0, key: "a" },
+        { ts: 1, key: "b" },
+    ];
     const thirdFlush = [
         { ts: 0, key: "a" },
         { ts: 1, key: "b" },
@@ -243,8 +258,14 @@ test.cb("accumulator() sliding with key", t => {
         { ts: 2, key: "c" },
         { ts: 3, key: "d" },
     ];
-    const fifthFlush = [{ ts: 3, key: "d" }, { ts: 5, key: "f" }];
-    const sixthFlush = [{ ts: 5, key: "f" }, { ts: 6, key: "g" }];
+    const fifthFlush = [
+        { ts: 3, key: "d" },
+        { ts: 5, key: "f" },
+    ];
+    const sixthFlush = [
+        { ts: 5, key: "f" },
+        { ts: 6, key: "g" },
+    ];
 
     const flushes = [
         firstFlush,
@@ -286,7 +307,10 @@ test.cb(
             "nonExistingKey",
             { objectMode: true },
         );
-        const input = [{ ts: 0, key: "a" }, { ts: 1, key: "b" }];
+        const input = [
+            { ts: 0, key: "a" },
+            { ts: 1, key: "b" },
+        ];
 
         source
             .pipe(accumulatorStream)
@@ -334,10 +358,22 @@ test.cb(
             { ts: 6, key: "g" },
         ];
         const firstFlush = [{ ts: 0, key: "a" }];
-        const secondFlush = [{ ts: 0, key: "a" }, { ts: 2, key: "c" }];
-        const thirdFlush = [{ ts: 2, key: "c" }, { ts: 3, key: "d" }];
-        const fourthFlush = [{ ts: 3, key: "d" }, { ts: 5, key: "f" }];
-        const fifthFlush = [{ ts: 5, key: "f" }, { ts: 6, key: "g" }];
+        const secondFlush = [
+            { ts: 0, key: "a" },
+            { ts: 2, key: "c" },
+        ];
+        const thirdFlush = [
+            { ts: 2, key: "c" },
+            { ts: 3, key: "d" },
+        ];
+        const fourthFlush = [
+            { ts: 3, key: "d" },
+            { ts: 5, key: "f" },
+        ];
+        const fifthFlush = [
+            { ts: 5, key: "f" },
+            { ts: 6, key: "g" },
+        ];
 
         const flushes = [
             firstFlush,
@@ -469,7 +505,10 @@ test.cb("accumulatorBy() sliding", t => {
         { ts: 6, key: "g" },
     ];
     const firstFlush = [{ ts: 0, key: "a" }];
-    const secondFlush = [{ ts: 0, key: "a" }, { ts: 1, key: "b" }];
+    const secondFlush = [
+        { ts: 0, key: "a" },
+        { ts: 1, key: "b" },
+    ];
     const thirdFlush = [
         { ts: 0, key: "a" },
         { ts: 1, key: "b" },
@@ -480,8 +519,14 @@ test.cb("accumulatorBy() sliding", t => {
         { ts: 2, key: "c" },
         { ts: 3, key: "d" },
     ];
-    const fifthFlush = [{ ts: 3, key: "d" }, { ts: 5, key: "f" }];
-    const sixthFlush = [{ ts: 5, key: "f" }, { ts: 6, key: "g" }];
+    const fifthFlush = [
+        { ts: 3, key: "d" },
+        { ts: 5, key: "f" },
+    ];
+    const sixthFlush = [
+        { ts: 5, key: "f" },
+        { ts: 6, key: "g" },
+    ];
 
     const flushes = [
         firstFlush,

tests/batch.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { batch, map, fromArray } = mhysa({ objectMode: true });
+import { strom } from "../src";
+const { batch, map, fromArray } = strom({ objectMode: true });
 
 test.cb("batch() batches chunks together", t => {
     t.plan(3);

tests/child.spec.ts

@@ -2,8 +2,8 @@ import * as cp from "child_process";
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { child } = mhysa();
+import { strom } from "../src";
+const { child } = strom();
 
 test.cb(
     "child() allows easily writing to child process stdin and reading from its stdout",

tests/collect.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { collect } = mhysa();
+import { strom } from "../src";
+const { collect } = strom();
 
 test.cb(
     "collect() collects streamed elements into an array (object, flowing mode)",
@@ -59,7 +59,7 @@ test.cb(
         const source = new Readable({ objectMode: false });
 
         source
-            .pipe(collect())
+            .pipe(collect({ objectMode: false }))
             .on("data", collected => {
                 expect(collected).to.deep.equal(Buffer.from("abc"));
                 t.pass();

tests/compose.spec.ts

@@ -2,9 +2,9 @@ import * as test from "ava";
 import { expect } from "chai";
 import { sleep } from "../src/helpers";
 import { Readable, Writable } from "stream";
-import mhysa from "../src";
+import { strom } from "../src";
 import { performance } from "perf_hooks";
-const { compose, map, fromArray } = mhysa({ objectMode: true });
+const { compose, map, fromArray } = strom({ objectMode: true });
 
 test.cb("compose() chains two streams together in the correct order", t => {
     t.plan(3);
@@ -114,13 +114,9 @@ test("compose() writable length should be less than highWaterMark when handing w
             return chunk;
         });
 
-        const composed = compose(
-            [first, second],
-            undefined,
-            {
+        const composed = compose([first, second], undefined, {
             highWaterMark: 2,
-            },
-        );
+        });
         composed.on("error", err => {
             reject();
         });
@@ -168,13 +164,9 @@ test("compose() should emit drain event ~rate * highWaterMark ms for every write
             return chunk;
         });
 
-        const composed = compose(
-            [first, second],
-            undefined,
-            {
+        const composed = compose([first, second], undefined, {
             highWaterMark,
-            },
-        );
+        });
         composed.on("error", err => {
             reject();
         });
@@ -221,13 +213,9 @@ test.cb(
             return chunk;
         });
 
-        const composed = compose(
-            [first, second],
-            undefined,
-            {
+        const composed = compose([first, second], undefined, {
             highWaterMark: 5,
-            },
-        );
+        });
 
         composed.on("error", err => {
             t.end(err);
@@ -284,13 +272,9 @@ test.cb(
             { highWaterMark: 1 },
         );
 
-        const composed = compose(
-            [first, second],
-            undefined,
-            {
+        const composed = compose([first, second], undefined, {
             highWaterMark: 5,
-            },
-        );
+        });
         composed.on("error", err => {
             t.end(err);
         });
@@ -355,13 +339,9 @@ test.cb(
             { highWaterMark: 2 },
         );
 
-        const composed = compose(
-            [first, second],
-            undefined,
-            {
+        const composed = compose([first, second], undefined, {
             highWaterMark: 5,
-            },
-        );
+        });
         composed.on("error", err => {
             t.end(err);
         });
@@ -414,13 +394,9 @@ test.cb(
             return chunk;
         });
 
-        const composed = compose(
-            [first, second],
-            undefined,
-            {
+        const composed = compose([first, second], undefined, {
             highWaterMark: 6,
-            },
-        );
+        });
 
         composed.on("error", err => {
             t.end(err);
@@ -470,12 +446,9 @@ test.cb("compose() should be 'destroyable'", t => {
         return chunk;
     });
 
-    const composed = compose(
-        [first, second],
-        (err: any) => {
+    const composed = compose([first, second], (err: any) => {
         t.pass();
-        },
-    );
+    });
 
     const fakeSource = new Readable({
         objectMode: true,
@@ -531,13 +504,9 @@ test.cb("compose() `finish` and `end` propagates", t => {
         return chunk;
     });
 
-    const composed = compose(
-        [first, second],
-        undefined,
-        {
+    const composed = compose([first, second], undefined, {
         highWaterMark: 3,
-        },
-    );
+    });
 
     const fakeSource = new Readable({
         objectMode: true,

tests/concat.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { concat, collect } = mhysa();
+import { strom } from "../src";
+const { concat, collect } = strom();
 
 test.cb(
     "concat() concatenates multiple readable streams (object, flowing mode)",
@@ -172,7 +172,7 @@ test.cb(
 test.cb("concat() concatenates empty list of readable streams", t => {
     t.plan(0);
     concat()
-        .pipe(collect())
+        .pipe(collect({ objectMode: false }))
         .on("data", _ => {
             t.fail();
         })

tests/defaultOptions.spec.ts

@@ -1,11 +1,11 @@
 import { Readable } from "stream";
 import test from "ava";
-import mhysa from "../src";
+import { strom } from "../src";
 
-const withDefaultOptions = mhysa({ objectMode: true });
-const withoutOptions = mhysa();
+const withDefaultOptions = strom({ objectMode: true });
+const withoutOptions = strom();
 
-test("Mhysa instances can have default options", t => {
+test("strom instances can have default options", t => {
     let batch = withDefaultOptions.batch();
     t.true(batch._readableState.objectMode);
     t.true(batch._writableState.objectMode);

tests/demux.spec.ts

@@ -1,11 +1,11 @@
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
+import { strom } from "../src";
 import { Writable, Readable } from "stream";
-const sinon = require("sinon");
-const { sleep } = require("../src/helpers");
+import * as sinon from "sinon";
+import { sleep } from "../src/helpers";
 import { performance } from "perf_hooks";
-const { demux, map, fromArray } = mhysa({ objectMode: true });
+const { demux, map, fromArray } = strom({ objectMode: true });
 
 interface Test {
     key: string;

tests/duplex.spec.ts

@@ -2,8 +2,8 @@ import * as cp from "child_process";
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { duplex } = mhysa();
+import { strom } from "../src";
+const { duplex } = strom();
 
 test.cb(
     "duplex() combines a writable and readable stream into a ReadWrite stream",

tests/filter.spec.ts

@@ -1,8 +1,8 @@
 import test from "ava";
 import { expect } from "chai";
 import { Readable } from "stream";
-import mhysa from "../src";
-const { filter } = mhysa();
+import { strom } from "../src";
+const { filter } = strom();
 
 test.cb("filter() filters elements synchronously", t => {
     t.plan(2);

tests/flatMap.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { flatMap } = mhysa({ objectMode: true });
+import { strom } from "../src";
+const { flatMap } = strom({ objectMode: true });
 
 test.cb("flatMap() maps elements synchronously", t => {
     t.plan(6);

tests/fromArray.spec.ts

@@ -1,7 +1,7 @@
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { fromArray } = mhysa();
+import { strom } from "../src";
+const { fromArray } = strom();
 
 test.cb("fromArray() streams array elements in flowing mode", t => {
     t.plan(3);

tests/join.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { join } = mhysa();
+import { strom } from "../src";
+const { join } = strom();
 
 test.cb("join() joins chunks using the specified separator", t => {
     t.plan(9);

tests/last.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { last } = mhysa();
+import { strom } from "../src";
+const { last } = strom();
 
 test("last() resolves to the last chunk streamed by the given readable stream", async t => {
     const source = new Readable({ objectMode: true });

tests/map.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { map } = mhysa();
+import { strom } from "../src";
+const { map } = strom();
 
 test.cb("map() maps elements synchronously", t => {
     t.plan(3);

tests/merge.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { merge } = mhysa();
+import { strom } from "../src";
+const { merge } = strom();
 
 test.cb(
     "merge() merges multiple readable streams in chunk arrival order",

tests/parallelMap.spec.ts

@@ -2,9 +2,9 @@ import { Readable } from "stream";
 import { performance } from "perf_hooks";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
+import { strom } from "../src";
 import { sleep } from "../src/helpers";
-const { parallelMap } = mhysa({ objectMode: true });
+const { parallelMap } = strom({ objectMode: true });
 
 test.cb("parallelMap() parallel mapping", t => {
     t.plan(6);

tests/parse.spec.ts

@@ -1,8 +1,8 @@
 import { Readable, finished } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { parse } = mhysa();
+import { strom } from "../src";
+const { parse } = strom();
 
 test.cb("parse() parses the streamed elements as JSON", t => {
     t.plan(3);

tests/rate.spec.ts

@@ -2,8 +2,8 @@ import { Readable } from "stream";
 import { performance } from "perf_hooks";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { rate } = mhysa({ objectMode: true });
+import { strom } from "../src";
+const { rate } = strom({ objectMode: true });
 
 test.cb("rate() sends data at a rate of 150", t => {
     t.plan(5);

tests/reduce.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { reduce } = mhysa({ objectMode: true });
+import { strom } from "../src";
+const { reduce } = strom({ objectMode: true });
 
 test.cb("reduce() reduces elements synchronously", t => {
     t.plan(1);

tests/replace.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { replace } = mhysa();
+import { strom } from "../src";
+const { replace } = strom();
 
 test.cb(
     "replace() replaces occurrences of the given string in the streamed elements with the specified " +

tests/split.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { split } = mhysa();
+import { strom } from "../src";
+const { split } = strom();
 
 test.cb("split() splits chunks using the default separator (\\n)", t => {
     t.plan(5);

tests/stringify.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { stringify } = mhysa();
+import { strom } from "../src";
+const { stringify } = strom();
 
 test.cb("stringify() stringifies the streamed elements as JSON", t => {
     t.plan(4);

tests/unbatch.spec.ts

@@ -1,8 +1,8 @@
 import { Readable } from "stream";
 import test from "ava";
 import { expect } from "chai";
-import mhysa from "../src";
-const { unbatch, batch } = mhysa({ objectMode: true });
+import { strom } from "../src";
+const { unbatch, batch } = strom({ objectMode: true });
 
 test.cb("unbatch() unbatches", t => {
     t.plan(3);

tests/utils/collected.spec.ts

@@ -1,7 +1,7 @@
 import test from "ava";
 import { collected } from "../../src/utils";
-import mhysa from "../../src";
-const { fromArray, collect } = mhysa({ objectMode: true });
+import { strom } from "../../src";
+const { fromArray, collect } = strom({ objectMode: true });
 
 test("collected returns a promise for the first data point", async t => {
     const data = collected(fromArray([1, 2, 3, 4]).pipe(collect()));