Move the CODE93 class out of index.js

Also move the helper methods to static class methods

Author: Alex Tessmer

src/barcodes/CODE93/CODE93.js

@@ -0,0 +1,73 @@
+// Encoding documentation:
+// https://en.wikipedia.org/wiki/Code_93#Detailed_outline
+
+import { SYMBOLS, BINARIES } from './constants';
+import Barcode from "../Barcode.js";
+
+class CODE93 extends Barcode {
+	constructor(data, options){
+		data = data.toUpperCase();
+
+		super(data, options);
+	}
+
+	valid(){
+		return /^[0-9A-Z\-. $/+%]+$/.test(this.data);
+	}
+
+	encode(){
+		const symbols = this.data.split('');
+		const encoded = symbols
+			.map(s => CODE93.getEncoding(s))
+			.join('');
+
+		// Compute checksum symbols
+		const csumC = CODE93.checksum(symbols, 20);
+		const csumK = CODE93.checksum(symbols.concat(csumC), 15);
+
+		return {
+			text: this.text,
+			data:
+				// Add the start bits
+				CODE93.getEncoding('*') +
+				// Add the encoded bits
+				encoded +
+				// Add the checksum
+				CODE93.getEncoding(csumC) + CODE93.getEncoding(csumK) +
+				// Add the stop bits
+				CODE93.getEncoding('*') +
+				// Add the termination bit
+				'1'
+		};
+	}
+
+	// Get the binary encoding of a symbol
+	static getEncoding(symbol) {
+		return BINARIES[CODE93.symbolValue(symbol)];
+	}
+
+	// Get the symbol for a symbol value
+	static getSymbol(symbolValue) {
+		return SYMBOLS[symbolValue];
+	}
+
+	// Get the symbol value of a symbol
+	static symbolValue(symbol) {
+		return SYMBOLS.indexOf(symbol);
+	}
+
+	// Calculate a checksum symbol
+	static checksum(symbols, maxWeight) {
+		const csum = symbols
+			.slice()
+			.reverse()
+			.reduce((sum, symbol, idx) => {
+				const weight = (idx % maxWeight) + 1;
+				return sum + (CODE93.symbolValue(symbol) * weight);
+			}, 0);
+
+		return CODE93.getSymbol(csum % 47);
+	}
+}
+
+export default CODE93;

src/barcodes/CODE93/index.js

@@ -1,73 +1,3 @@
-// Encoding documentation:
-// https://en.wikipedia.org/wiki/Code_93#Detailed_outline
-
-import { SYMBOLS, BINARIES } from './constants';
-import Barcode from "../Barcode.js";
-
-class CODE93 extends Barcode {
-	constructor(data, options){
-		data = data.toUpperCase();
-
-		super(data, options);
-	}
-
-	valid(){
-		return /^[0-9A-Z\-. $/+%]+$/.test(this.data);
-	}
-
-	encode(){
-		const symbols = this.data.split('');
-		const encoded = symbols
-			.map(s => getEncoding(s))
-			.join('');
-
-		// Compute checksum symbols
-		const csumC = checksum(symbols, 20);
-		const csumK = checksum(symbols.concat(csumC), 15);
-
-		return {
-			text: this.text,
-			data:
-				// Add the start bits
-				getEncoding('*') +
-				// Add the encoded bits
-				encoded +
-				// Add the checksum
-				getEncoding(csumC) + getEncoding(csumK) +
-				// Add the stop bits
-				getEncoding('*') +
-				// Add the termination bit
-				'1'
-		};
-	}
-}
-
-// Get the binary encoding of a symbol
-const getEncoding = (symbol) => {
-	return BINARIES[symbolValue(symbol)];
-};
-
-// Get the symbol for a symbol value
-const getSymbol = (symbolValue) => {
-	return SYMBOLS[symbolValue];
-};
-
-// Get the symbol value of a symbol
-const symbolValue = (symbol) => {
-	return SYMBOLS.indexOf(symbol);
-};
-
-// Calculate a checksum symbol
-const checksum = (symbols, maxWeight) => {
-	const csum = symbols
-		.slice()
-		.reverse()
-		.reduce((sum, symbol, idx) => {
-			const weight = (idx % maxWeight) + 1;
-			return sum + (symbolValue(symbol) * weight);
-		}, 0);
-
-	return getSymbol(csum % 47);
-};
+import CODE93 from './CODE93.js';
 
 export {CODE93};