switch to separate explicit functions for different kinds of output

README.md

@@ -11,13 +11,14 @@ Stick some text files into a zip file. This library is super simple and small be
 ## How
 
 ```javascript
-import doNotZip from 'do-not-zip';
-const output = doNotZip([
+import * as doNotZip from 'do-not-zip';
+const output = doNotZip.toArray([
 	{ path: 'path/to/file1.txt', data: 'Hello' },
 	{ path: 'another/file2.txt', data: 'World' },
 	{ path: 'yet/another/file3.bin', data: [1, 2, 3, 4, 5] },
 ]);
-// => output will be a Buffer on the server and a Blob on the client
+// => output will be an array of bytes
+// use .toBuffer on the server to generate a Buffer, and use .toBlob on the client to generate a Blog
 ```
 
 ## Thanks

package.json

@@ -8,9 +8,8 @@
 		"archive"
 	],
 	"main": "./dist/index.cjs.js",
-	"module": "./src/index.js",
+	"module": "./dist/index.es.js",
 	"files": [
-		"src",
 		"dist"
 	],
 	"repository": {

rollup.config.js

@@ -1,6 +1,11 @@
 export default {
 	input: './src/index.js',
 	output: [
+		{
+			file: './dist/index.es.js',
+			format: 'es',
+			sourcemap: true,
+		},
 		{
 			file: './dist/index.cjs.js',
 			format: 'cjs',

src/crc32.js

@@ -0,0 +1,16 @@
+const table = [];
+for (let n = 0; n < 256; n++) {
+	let c = n;
+	for (let k = 0; k < 8; k++) {
+		c = c & 1 ? 0xEDB88320 ^ (c >>> 1) : c >>> 1;
+	}
+	table[n] = c;
+}
+
+export default bytes => {
+	let sum = -1;
+	for (const byte of bytes) {
+		sum = (sum >>> 8) ^ table[(sum ^ byte) & 0xFF];
+	}
+	return sum ^ -1;
+};

src/index.js

@@ -1,49 +1,3 @@
-// do-not-zip.js
-// Construct a Buffer or a Blob of a .zip file with no compression, on the server or in the browser
-
-const crcTable = [];
-for (let n = 0; n < 256; n++) {
-	let c = n;
-	for (let k = 0; k < 8; k++) {
-		c = c & 1 ? 0xEDB88320 ^ (c >>> 1) : c >>> 1;
-	}
-	crcTable[n] = c;
-}
-
-const crc32 = bytes => {
-	let sum = -1;
-	for (const byte of bytes) {
-		sum = (sum >>> 8) ^ crcTable[(sum ^ byte) & 0xFF];
-	}
-	return sum ^ -1;
-};
-
-const int = (n, length) => {
-	const out = [];
-	while (length--) {
-		out.push(n & 0xFF);
-		n >>>= 8;
-	}
-	return out;
-};
-
-const toBytes = data => typeof data === 'string' ? [...data].map(char => char.charCodeAt(0)) : data;
-
-export default files => {
-	let fileData = [];
-	const centralDirectory = [];
-	for (const { path, data } of files) {
-		const dataBytes = toBytes(data);
-		const pathBytes = toBytes(path);
-		const commonHeader = [0x0A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, ...int(crc32(dataBytes), 4), ...int(dataBytes.length, 4), ...int(dataBytes.length, 4), ...int(pathBytes.length, 2), 0x00, 0x00];
-		centralDirectory.push(0x50, 0x4B, 0x01, 0x02, 0x14, 0x00, ...commonHeader, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, ...int(fileData.length, 4), ...pathBytes);
-		fileData = [...fileData, 0x50, 0x4B, 0x03, 0x04, ...commonHeader, ...pathBytes, ...dataBytes];
-	}
-	const bytes = [...fileData, ...centralDirectory, 0x50, 0x4B, 0x05, 0x06, 0x00, 0x00, 0x00, 0x00, ...int(files.length, 2), ...int(files.length, 2), ...int(centralDirectory.length, 4), ...int(fileData.length, 4), 0x00, 0x00];
-	if (typeof Blob !== 'undefined' && typeof Uint8Array !== 'undefined') {
-		return new Blob([Uint8Array.from(bytes)], { type: 'application/zip' });
-	}
-	if (typeof Buffer !== 'undefined') {
-		return Buffer.from(bytes);
-	}
-};
+export { default as toArray } from './toArray.js';
+export { default as toBlob } from './toBlob.js';
+export { default as toBuffer } from './toBuffer.js';

src/toArray.js

@@ -0,0 +1,25 @@
+import crc32 from './crc32.js';
+
+const int = (n, length) => {
+	const out = [];
+	while (length--) {
+		out.push(n & 0xFF);
+		n >>>= 8;
+	}
+	return out;
+};
+
+const toBytes = data => typeof data === 'string' ? [...data].map(char => char.charCodeAt(0)) : data;
+
+export default files => {
+	let fileData = [];
+	const centralDirectory = [];
+	for (const { path, data } of files) {
+		const dataBytes = toBytes(data);
+		const pathBytes = toBytes(path);
+		const commonHeader = [0x0A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, ...int(crc32(dataBytes), 4), ...int(dataBytes.length, 4), ...int(dataBytes.length, 4), ...int(pathBytes.length, 2), 0x00, 0x00];
+		centralDirectory.push(0x50, 0x4B, 0x01, 0x02, 0x14, 0x00, ...commonHeader, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, ...int(fileData.length, 4), ...pathBytes);
+		fileData = [...fileData, 0x50, 0x4B, 0x03, 0x04, ...commonHeader, ...pathBytes, ...dataBytes];
+	}
+	return [...fileData, ...centralDirectory, 0x50, 0x4B, 0x05, 0x06, 0x00, 0x00, 0x00, 0x00, ...int(files.length, 2), ...int(files.length, 2), ...int(centralDirectory.length, 4), ...int(fileData.length, 4), 0x00, 0x00];
+};

src/toBlob.js

@@ -0,0 +1,3 @@
+import toArray from './toArray.js';
+
+export default files => new Blob([Uint8Array.from(toArray(files))], { type: 'application/zip' });

src/toBuffer.js

@@ -0,0 +1,3 @@
+import toArray from './toArray.js';
+
+export default files => Buffer.from(toArray(files));