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javascript-barcode-reader

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Comparing version 0.6.2 to 0.6.3

dist/lib/src/utilities/adaptiveThreshold.js
dist/lib/src/utilities/adaptiveThreshold.js.map
dist/types/src/utilities/adaptiveThreshold.d.ts
src/.eslintrc.json
src/codabar/index.ts
src/code-128/index.ts
src/code-39/index.ts
src/code-93/index.ts
src/code2of5/index.ts
src/ean-13/index.ts
src/ean-8/index.ts
src/index.ts
src/utilities/adaptiveThreshold.ts
src/utilities/combineAllPossible.ts
src/utilities/createImageData.ts
src/utilities/getImageDataFromSource.ts
src/utilities/getLines.ts
src/utilities/isUrl.ts
src/utilities/medianFilter.ts

685

dist/javascript-barcode-reader.es5.js

@@ -27,31 +27,3 @@ import { read } from 'jimp';

function __generator(thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
}
var CHAR_SET = {
const CHAR_SET = {
nnnnnww: '0',

@@ -76,11 +48,11 @@ nnnnwwn: '1',

nwnwnnw: 'C',
nnnwwwn: 'D'
nnnwwwn: 'D',
};
function decoder(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return (pre + item) / 2; }, 0));
const code = [];
const barThreshold = Math.ceil(lines.reduce((pre, item) => (pre + item) / 2, 0));
// Read one encoded character at a time.
while (lines.length > 0) {
var seg = lines.splice(0, 8).splice(0, 7);
var a = seg.map(function (line) { return (line < barThreshold ? 'n' : 'w'); }).join('');
const seg = lines.splice(0, 8).splice(0, 7);
const a = seg.map(line => (line < barThreshold ? 'n' : 'w')).join('');
code.push(CHAR_SET[a]);

@@ -91,3 +63,3 @@ }

var WIDTH_TBL = [
const WIDTH_TBL = [
'212222',

@@ -201,5 +173,5 @@ '222122',

'211133',
'2331112'
'2331112',
];
var TBL_A = [
const TBL_A = [
' ',

@@ -312,5 +284,5 @@ '!',

'Stop',
'Reverse Stop'
'Reverse Stop',
];
var TBL_B = [
const TBL_B = [
' ',

@@ -423,5 +395,5 @@ '!',

'Stop',
'Reverse Stop'
'Reverse Stop',
];
var TBL_C = [
const TBL_C = [
'00',

@@ -534,18 +506,24 @@ '01',

'Stop',
'Reverse Stop'
'Reverse Stop',
];
var computeGroup = function (lines) {
var factor = lines.reduce(function (pre, item) { return pre + item; }, 0) / (Math.ceil(lines.length / 6) * 11);
// factor = Math.round(factor * 10) / 10
return lines.map(function (item) { return Math.round(item / factor) || 1; });
const computeGroup = (lines) => {
const count = lines.length - 13;
const factor = lines.reduce((pre, item, i) => {
if (i >= count)
return pre;
return pre + item;
}, 0) /
(Math.ceil(count / 6) * 11);
console.log(factor);
return lines.map(item => Math.round(item / factor) || 1);
};
function decoder$1(lines) {
var lookupTBL = TBL_B;
const code = [];
let lookupTBL = TBL_B;
// let sumOP = 0
var letterKey;
var letterCode;
var letterCodePrev;
var keyIndex;
var code = [];
var computedLines = computeGroup(lines);
let letterKey;
let letterCode;
let letterCodePrev;
let keyIndex;
const computedLines = computeGroup(lines);
if (!computedLines)

@@ -555,8 +533,5 @@ return '';

computedLines.pop();
// skip check code and stop code using -12
for (var i = 0; i * 6 < computedLines.length - 12; i += 1) {
// skip check code and stop code using -13
for (let i = 0; i * 6 < computedLines.length - 13; i += 1) {
letterKey = computedLines.slice(i * 6, (i + 1) * 6).join('');
if (letterKey === '114141') {
letterKey = '113141';
}
keyIndex = WIDTH_TBL.indexOf(letterKey);

@@ -595,6 +570,7 @@ letterCode = lookupTBL[keyIndex];

// if (sumOP % 103 !== WIDTH_TBL.indexOf(letterKey)) return ''
console.log('CODE: ', code.join(''));
return code.join('');
}
var CHAR_SET$1 = {
const CHAR_SET$1 = {
nnnwwnwnn: '0',

@@ -643,12 +619,12 @@ wnnwnnnnw: '1',

nnnwnwnwn: '%',
nwnnwnwnn: '*'
nwnnwnwnn: '*',
};
function decoder$2(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return pre + item; }, 0) / lines.length);
const code = [];
const barThreshold = Math.ceil(lines.reduce((pre, item) => pre + item, 0) / lines.length);
// Read one encoded character at a time.
while (lines.length > 0) {
var sequenceBar = lines
const sequenceBar = lines
.splice(0, 10)
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.map(line => (line > barThreshold ? 'w' : 'n'))
.slice(0, 9)

@@ -663,3 +639,3 @@ .join('');

var CHAR_SET$2 = [
const CHAR_SET$2 = [
{ '100010100': '0' },

@@ -712,11 +688,11 @@ { '101001000': '1' },

{ '100110010': '(+)' },
{ '101011110': '*' }
{ '101011110': '*' },
];
function decoder$3(lines) {
var code = [];
var binary = [];
const code = [];
const binary = [];
// remove termination bar
lines.pop();
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return pre + item; }, 0) / lines.length);
var minBarWidth = Math.ceil(lines.reduce(function (pre, item) {
const barThreshold = Math.ceil(lines.reduce((pre, item) => pre + item, 0) / lines.length);
const minBarWidth = Math.ceil(lines.reduce((pre, item) => {
if (item < barThreshold)

@@ -727,4 +703,4 @@ return (pre + item) / 2;

// leave the padded *
for (var i = 0; i < lines.length; i += 1) {
var segment = lines[i];
for (let i = 0; i < lines.length; i += 1) {
let segment = lines[i];
while (segment > 0) {

@@ -740,18 +716,15 @@ if (i % 2 === 0) {

}
var _loop_1 = function (i) {
var searcKey = binary.slice(i, i + 9).join('');
var char = CHAR_SET$2.filter(function (item) { return Object.keys(item)[0] === searcKey; });
for (let i = 0; i < binary.length; i += 9) {
const searcKey = binary.slice(i, i + 9).join('');
const char = CHAR_SET$2.filter(item => Object.keys(item)[0] === searcKey);
code.push(char[0][searcKey]);
};
for (var i = 0; i < binary.length; i += 9) {
_loop_1(i);
}
if (code.shift() !== '*' || code.pop() !== '*')
return '';
var K = code.pop();
var sum = 0;
var letter;
var Value;
var findValue = function (item) { return Object.values(item)[0] === letter; };
for (var i = code.length - 1; i >= 0; i -= 1) {
const K = code.pop();
let sum = 0;
let letter;
let Value;
const findValue = (item) => Object.values(item)[0] === letter;
for (let i = code.length - 1; i >= 0; i -= 1) {
letter = code[i];

@@ -763,5 +736,5 @@ Value = CHAR_SET$2.indexOf(CHAR_SET$2.filter(findValue)[0]);

return '';
var C = code.pop();
const C = code.pop();
sum = 0;
for (var i = code.length - 1; i >= 0; i -= 1) {
for (let i = code.length - 1; i >= 0; i -= 1) {
letter = code[i];

@@ -776,3 +749,3 @@ Value = CHAR_SET$2.indexOf(CHAR_SET$2.filter(findValue)[0]);

var CHAR_SET$3 = [
const CHAR_SET$3 = [
'nnwwn',

@@ -787,16 +760,16 @@ 'wnnnw',

'wnnwn',
'nwnwn'
'nwnwn',
];
function decoder$4(lines, type) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return (pre + item) / 2; }, 0));
const code = [];
const barThreshold = Math.ceil(lines.reduce((pre, item) => (pre + item) / 2, 0));
if (type === 'interleaved') {
// extract start/ends pair
var startChar = lines
const startChar = lines
.splice(0, 4)
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');
var endChar = lines
const endChar = lines
.splice(lines.length - 3, 3)
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -807,11 +780,11 @@ if (startChar !== 'nnnn' || endChar !== 'wnn')

while (lines.length > 0) {
var seg = lines.splice(0, 10);
var a = seg
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
const seg = lines.splice(0, 10);
const a = seg
.filter((item, index) => index % 2 === 0)
.map(line => (line > barThreshold ? 'w' : 'n'))
.join('');
code.push(CHAR_SET$3.indexOf(a));
var b = seg
.filter(function (item, index) { return index % 2 !== 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
const b = seg
.filter((item, index) => index % 2 !== 0)
.map(line => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -823,11 +796,11 @@ code.push(CHAR_SET$3.indexOf(b));

// extract start/ends pair
var startChar = lines
const startChar = lines
.splice(0, 6)
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.filter((item, index) => index % 2 === 0)
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');
var endChar = lines
const endChar = lines
.splice(lines.length - 5, 5)
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.filter((item, index) => index % 2 === 0)
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -838,6 +811,6 @@ if (startChar !== 'wwn' || endChar !== 'wnw')

while (lines.length > 0) {
var a = lines
const a = lines
.splice(0, 10)
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.filter((item, index) => index % 2 === 0)
.map(line => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -850,3 +823,3 @@ code.push(CHAR_SET$3.indexOf(a));

var UPC_SET = {
const UPC_SET = {
'3211': '0',

@@ -861,8 +834,8 @@ '2221': '1',

'1213': '8',
'3112': '9'
'3112': '9',
};
function decoder$5(lines) {
var code = '';
let code = '';
// start indicator/reference lines
var bar = (lines[0] + lines[1] + lines[2]) / 3;
const bar = (lines[0] + lines[1] + lines[2]) / 3;
// remove start pattern

@@ -878,8 +851,6 @@ lines.shift();

lines.splice(24, 5);
for (var i = 0; i < lines.length; i += 4) {
var group = lines.slice(i, i + 4);
var digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(function (digit) {
return digit === 1.5 ? 1 : Math.round(digit);
});
var result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
for (let i = 0; i < lines.length; i += 4) {
const group = lines.slice(i, i + 4);
const digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(digit => digit === 1.5 ? 1 : Math.round(digit));
const result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
if (result) {

@@ -895,3 +866,3 @@ code += result;

var UPC_SET$1 = {
const UPC_SET$1 = {
'3211': '0',

@@ -906,8 +877,8 @@ '2221': '1',

'1213': '8',
'3112': '9'
'3112': '9',
};
function decoder$6(lines) {
var code = '';
let code = '';
// start indicator/reference lines
var bar = (lines[0] + lines[1] + lines[2]) / 3;
const bar = (lines[0] + lines[1] + lines[2]) / 3;
// remove start pattern

@@ -923,8 +894,6 @@ lines.shift();

lines.splice(16, 5);
for (var i = 0; i < lines.length; i += 4) {
var group = lines.slice(i, i + 4);
var digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(function (digit) {
return digit === 1.5 ? 1 : Math.round(digit);
});
var result = UPC_SET$1[digits.join('')] || UPC_SET$1[digits.reverse().join('')];
for (let i = 0; i < lines.length; i += 4) {
const group = lines.slice(i, i + 4);
const digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(digit => digit === 1.5 ? 1 : Math.round(digit));
const result = UPC_SET$1[digits.join('')] || UPC_SET$1[digits.reverse().join('')];
if (result) {

@@ -940,2 +909,62 @@ code += result;

function applyAdaptiveThreshold(data, width, height) {
const integralImage = new Array(width * height).fill(0);
const channels = data.length / (width * height);
const t = 0.15; // threshold percentage
const s = Math.floor(height); // bracket size
const s2 = Math.floor(s / 2);
for (let i = 0; i < width; i += 1) {
let sum = 0;
for (let j = 0; j < height; j += 1) {
const pureIndex = j * width + i;
const index = pureIndex * channels;
// greyscale
const v = (data[index] + data[index + 1] + data[index + 2]) / 3;
data[index] = v;
data[index + 1] = v;
data[index + 2] = v;
sum += v;
if (i === 0) {
integralImage[pureIndex] = sum;
}
else {
integralImage[pureIndex] = integralImage[pureIndex - 1] + sum;
}
}
}
// skip edge rows
for (let i = 0; i < width; i += 1) {
for (let j = 0; j < height; j += 1) {
const pureIndex = j * width + i;
const index = pureIndex * channels;
// no. of pixels per window
let x1 = i - s2;
let x2 = i + s2;
let y1 = j - s2;
let y2 = j + s2;
if (x1 < 0)
x1 = 0;
if (x2 >= width)
x2 = width - 1;
if (y1 < 0)
y1 = 0;
if (y2 >= height)
y2 = height - 1;
const count = (x2 - x1) * (y2 - y1);
const sum = integralImage[y2 * width + x2] -
integralImage[y1 * width + x2] -
integralImage[y2 * width + x1] +
integralImage[y1 * width + x1];
let v = 255;
if (data[index] * count < sum * (1 - t)) {
v = 0;
}
data[index] = v;
data[index + 1] = v;
data[index + 2] = v;
}
}
return data;
}
function combineAllPossible(finalResult, result) {

@@ -945,5 +974,5 @@ if (finalResult === '' || result === '') {

}
var finalResultArr = finalResult.split('');
var resultArr = result.split('');
resultArr.forEach(function (char, index) {
const finalResultArr = finalResult.split('');
const resultArr = result.split('');
resultArr.forEach((char, index) => {
if (!finalResultArr[index] || finalResultArr[index] === '?') {

@@ -959,8 +988,8 @@ if (char && char !== '?') {

function createImageData(image) {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx)
throw new Error('canvas not available');
var width = image.naturalWidth;
var height = image.naturalHeight;
const width = image.naturalWidth;
const height = image.naturalHeight;
canvas.width = width;

@@ -973,3 +1002,3 @@ canvas.height = height;

function isUrl(s) {
var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-/]))?/;
const regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-/]))?/;
if (s.startsWith('#'))

@@ -980,53 +1009,51 @@ return false;

var isNode = typeof process === 'object' && process.release && process.release.name === 'node';
const isNode = typeof process === 'object' && process.release && process.release.name === 'node';
function getImageDataFromSource(source) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, new Promise(function (resolve, reject) {
if (typeof source === 'string') {
if (source.startsWith('#')) {
var imageElement = document.getElementById(source.substr(1));
if (imageElement instanceof HTMLImageElement) {
resolve(createImageData(imageElement));
}
if (imageElement instanceof HTMLCanvasElement) {
var ctx = imageElement.getContext('2d');
if (!ctx)
throw new Error('Cannot create canvas 2d context');
resolve(ctx.getImageData(0, 0, imageElement.width, imageElement.height));
}
reject(new Error('Invalid image source specified!'));
}
else if (isUrl(source)) {
var img_1 = new Image();
img_1.onerror = reject;
img_1.onload = function () { return resolve(createImageData(img_1)); };
img_1.src = source;
}
else if (isNode) {
read(source, function (err, image) {
if (err) {
reject(err);
}
else {
var _a = image.bitmap, data = _a.data, width = _a.width, height = _a.height;
resolve({
data: Uint8ClampedArray.from(data),
width: width,
height: height
});
}
});
}
return __awaiter(this, void 0, void 0, function* () {
return new Promise((resolve, reject) => {
if (typeof source === 'string') {
if (source.startsWith('#')) {
const imageElement = document.getElementById(source.substr(1));
if (imageElement instanceof HTMLImageElement) {
resolve(createImageData(imageElement));
}
else if (source instanceof HTMLImageElement) {
resolve(createImageData(source));
}
else if (source instanceof HTMLCanvasElement) {
var ctx = source.getContext('2d');
if (imageElement instanceof HTMLCanvasElement) {
const ctx = imageElement.getContext('2d');
if (!ctx)
throw new Error('Cannot create canvas 2d context');
resolve(ctx.getImageData(0, 0, source.width, source.height));
resolve(ctx.getImageData(0, 0, imageElement.width, imageElement.height));
}
})];
reject(new Error('Invalid image source specified!'));
}
else if (isUrl(source)) {
const img = new Image();
img.onerror = reject;
img.onload = () => resolve(createImageData(img));
img.src = source;
}
else if (isNode) {
read(source, (err, image) => {
if (err) {
reject(err);
}
else {
const { data, width, height } = image.bitmap;
resolve({
data: Uint8ClampedArray.from(data),
width,
height,
});
}
});
}
}
else if (source instanceof HTMLImageElement) {
resolve(createImageData(source));
}
else if (source instanceof HTMLCanvasElement) {
const ctx = source.getContext('2d');
if (!ctx)
throw new Error('Cannot create canvas 2d context');
resolve(ctx.getImageData(0, 0, source.width, source.height));
}
});

@@ -1036,21 +1063,53 @@ });

function applyMedianFilter(data, width, height, windowSize = 3) {
const channels = data.length / (width * height);
const filterWindow = [];
const limit = (windowSize - 1) / 2;
for (let i = limit * -1; i < limit + 1; i += 1) {
for (let j = limit * -1; j < limit + 1; j += 1) {
filterWindow.push([i, j]);
}
}
for (let col = limit; col < width - limit; col += 1) {
for (let row = limit; row < height - limit; row += 1) {
const index = (row * width + col) * channels;
const arr = [];
for (let z = 0; z < filterWindow.length; z += 1) {
const i = ((row + filterWindow[z][0]) * width + (col + filterWindow[z][1])) * channels;
const average = Math.sqrt((Math.pow(data[i], 2) + Math.pow(data[i + 1], 2) + Math.pow(data[i + 2], 2)) / 3);
arr.push(average);
}
const sorted = arr.sort((a, b) => a - b);
const medianValue = sorted[Math.floor(sorted.length / 2)];
// const thresholdValue = medianValue >= 180 ? 255 : 0
data[index + 0] = medianValue;
data[index + 1] = medianValue;
data[index + 2] = medianValue;
if (channels === 4)
data[index + 3] = 255;
}
}
return data;
}
function getLines(data, width, height) {
var channels = data.length / (width * height);
var lines = [];
var count = 0;
var colSum = 0;
var colAvg = 0;
var colAvgLast = 0;
for (var col = 0; col < width; col += 1) {
colSum = 0;
for (var row = 0; row < height; row += 1) {
colSum += data[(row * width + col) * channels];
const dataSlice = applyMedianFilter(data, width, height);
const channels = dataSlice.length / (width * height);
const lines = [];
let count = 0;
let columnAverageLast = 0;
for (let column = 0; column < width; column += 1) {
let columnSum = 0;
let columnAverage = 0;
for (let row = 0; row < height; row += 1) {
const index = (row * width + column) * channels;
columnSum += Math.sqrt((Math.pow(data[index], 2) + Math.pow(data[index + 1], 2) + Math.pow(data[index + 2], 2)) / 3);
}
// atleast 75% of the pixels are same in column
colAvg = colSum / height >= 127 ? 255 : 0;
// skip white padding in the start
if (count === 0 && colAvg === 255)
// pixels are same in column
columnAverage = columnSum / height >= 127 ? 255 : 0;
// skip white padding in the start & end
if (columnAverage === 255 && count === 0)
continue;
// count line width
if (colAvg === colAvgLast) {
if (columnAverage === columnAverageLast) {
count += 1;

@@ -1060,7 +1119,7 @@ }

lines.push(count);
columnAverageLast = columnAverage;
count = 1;
colAvgLast = colAvg;
}
// skip padding in the last
if (col === width - 1 && colAvg === 0) {
if (column === width - 1 && columnAverage === 0) {
lines.push(count);

@@ -1072,78 +1131,3 @@ }

function applyAdaptiveThreshold(data, width, height) {
var integralImage = new Array(width * height).fill(0);
var channels = data.length / (width * height);
var t = 0.15; // threshold percentage
var s = Math.floor(width / 4); // bracket size
var s2 = Math.ceil(s / 2);
for (var i = 0; i < width; i += 1) {
var sum = 0;
for (var j = 0; j < height; j += 1) {
var pureIndex = j * width + i;
var index = pureIndex * channels;
// greyscale
var v = (data[index] + data[index + 1] + data[index + 2]) / 3;
data[index] = v;
data[index + 1] = v;
data[index + 2] = v;
sum += v;
if (i === 0) {
integralImage[pureIndex] = sum;
}
else {
integralImage[pureIndex] = integralImage[pureIndex - 1] + sum;
}
}
}
// skip edge rows
for (var i = 0; i < width; i += 1) {
for (var j = 0; j < height; j += 1) {
var pureIndex = j * width + i;
var index = pureIndex * channels;
// no. of pixels per window
var x1 = i - s2;
var x2 = i + s2;
var y1 = j - s2;
var y2 = j + s2;
if (x1 < 0)
x1 = 0;
if (x2 >= width)
x2 = width - 1;
if (y1 < 0)
y1 = 0;
if (y2 >= height)
y2 = height - 1;
var count = (x2 - x1) * (y2 - y1);
var sum = integralImage[y2 * width + x2] -
integralImage[y1 * width + x2] -
integralImage[y2 * width + x1] +
integralImage[y1 * width + x1];
var v = 255;
if (data[index] * count < sum * (1 - t)) {
v = 0;
}
data[index] = v;
data[index + 1] = v;
data[index + 2] = v;
}
}
return data;
}
function applySimpleThreshold(data, width, height) {
var channels = data.length / (width * height);
for (var i = 0; i < data.length; i += channels) {
var r = data[i];
var g = data[i + 1];
var b = data[i + 2];
var v = (r + g + b) / 3;
v = v >= 127 ? 255 : 0;
data[i] = v;
data[i + 1] = v;
data[i + 2] = v;
}
return data;
}
var isTestEnv = process && process.env.NODE_ENV === 'test';
const isTestEnv = process && process.env.NODE_ENV === 'test';
var BARCODE_DECODERS;

@@ -1162,86 +1146,69 @@ (function (BARCODE_DECODERS) {

}
function javascriptBarcodeReader(_a) {
var image = _a.image, barcode = _a.barcode, barcodeType = _a.barcodeType, options = _a.options;
return __awaiter(this, void 0, void 0, function () {
var decoder$7, useSinglePass, imageData, _b, width, height, data, channels, finalResult, sPoints, slineStep, rowsToScan, i, sPoint, start, end, dataSlice, lines, result;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
switch (barcode) {
case BARCODE_DECODERS.codabar:
decoder$7 = decoder;
break;
case BARCODE_DECODERS['code-128']:
decoder$7 = decoder$1;
break;
case BARCODE_DECODERS['code-39']:
decoder$7 = decoder$2;
break;
case BARCODE_DECODERS['code-93']:
decoder$7 = decoder$3;
break;
case BARCODE_DECODERS['code-2of5']:
decoder$7 = decoder$4;
break;
case BARCODE_DECODERS['ean-13']:
decoder$7 = decoder$5;
break;
case BARCODE_DECODERS['ean-8']:
decoder$7 = decoder$6;
break;
default:
throw new Error("Invalid barcode specified. Available decoders: " + BARCODE_DECODERS + ".");
}
useSinglePass = isTestEnv || (options && options.singlePass) || false;
if (!isImageLike(image)) return [3 /*break*/, 1];
_b = image;
return [3 /*break*/, 3];
case 1: return [4 /*yield*/, getImageDataFromSource(image)];
case 2:
_b = _c.sent();
_c.label = 3;
case 3:
imageData = _b;
width = imageData.width;
height = imageData.height;
data = imageData.data;
channels = data.length / (width * height);
finalResult = '';
// apply adaptive threshold
if (options && options.useAdaptiveThreshold) {
data = applyAdaptiveThreshold(data, width, height);
}
sPoints = [5, 6, 4, 7, 3, 8, 2, 9, 1];
slineStep = Math.round(height / sPoints.length);
rowsToScan = Math.min(5, height);
for (i = 0; i < sPoints.length; i += 1) {
sPoint = sPoints[i];
start = channels * width * Math.floor(slineStep * sPoint);
end = start + rowsToScan * channels * width;
dataSlice = data.slice(start, end);
if (!options || !options.useAdaptiveThreshold) {
dataSlice = applySimpleThreshold(dataSlice, width, height);
}
lines = getLines(dataSlice, width, rowsToScan);
if (lines.length === 0) {
if (useSinglePass)
throw new Error('Failed to extract barcode!');
continue;
}
result = decoder$7(lines, barcodeType);
if (useSinglePass)
return [2 /*return*/, result];
if (!result)
continue;
if (!result.includes('?'))
return [2 /*return*/, result];
finalResult = combineAllPossible(finalResult, result);
if (!finalResult.includes('?'))
return [2 /*return*/, finalResult];
if (i === sPoints.length - 1)
return [2 /*return*/, finalResult];
}
function javascriptBarcodeReader({ image, barcode, barcodeType, options, }) {
return __awaiter(this, void 0, void 0, function* () {
let decoder$7;
switch (barcode) {
case BARCODE_DECODERS.codabar:
decoder$7 = decoder;
break;
case BARCODE_DECODERS['code-128']:
decoder$7 = decoder$1;
break;
case BARCODE_DECODERS['code-39']:
decoder$7 = decoder$2;
break;
case BARCODE_DECODERS['code-93']:
decoder$7 = decoder$3;
break;
case BARCODE_DECODERS['code-2of5']:
decoder$7 = decoder$4;
break;
case BARCODE_DECODERS['ean-13']:
decoder$7 = decoder$5;
break;
case BARCODE_DECODERS['ean-8']:
decoder$7 = decoder$6;
break;
default:
throw new Error(`Invalid barcode specified. Available decoders: ${BARCODE_DECODERS}.`);
}
const useSinglePass = isTestEnv || (options && options.singlePass) || false;
const imageData = isImageLike(image) ? image : yield getImageDataFromSource(image);
const width = imageData.width;
const height = imageData.height;
const channels = imageData.data.length / (width * height);
let finalResult = '';
// apply adaptive threshold
if (options && options.useAdaptiveThreshold) {
applyAdaptiveThreshold(imageData.data, width, height);
}
// check points for barcode location
const sPoints = [5, 6, 4, 7, 3, 8, 2, 9, 1];
const slineStep = Math.round(height / sPoints.length);
const rowsToScan = Math.min(3, height);
for (let i = 0; i < sPoints.length; i += 1) {
const sPoint = sPoints[i];
const start = channels * width * Math.floor(slineStep * sPoint);
const end = start + rowsToScan * channels * width;
const lines = getLines(imageData.data.slice(start, end), width, rowsToScan);
if (lines.length === 0) {
if (useSinglePass)
throw new Error('Failed to extract barcode!');
continue;
}
});
// Run the decoder
const result = decoder$7(lines, barcodeType);
if (useSinglePass)
return result;
if (!result)
continue;
if (!result.includes('?'))
return result;
finalResult = combineAllPossible(finalResult, result);
if (!finalResult.includes('?'))
return finalResult;
if (i === sPoints.length - 1)
return finalResult;
}
throw new Error('Failed to extract barcode!');
});

@@ -1248,0 +1215,0 @@ }

685

dist/javascript-barcode-reader.umd.js

@@ -31,31 +31,3 @@ (function (global, factory) {

function __generator(thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
}
var CHAR_SET = {
const CHAR_SET = {
nnnnnww: '0',

@@ -80,11 +52,11 @@ nnnnwwn: '1',

nwnwnnw: 'C',
nnnwwwn: 'D'
nnnwwwn: 'D',
};
function decoder(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return (pre + item) / 2; }, 0));
const code = [];
const barThreshold = Math.ceil(lines.reduce((pre, item) => (pre + item) / 2, 0));
// Read one encoded character at a time.
while (lines.length > 0) {
var seg = lines.splice(0, 8).splice(0, 7);
var a = seg.map(function (line) { return (line < barThreshold ? 'n' : 'w'); }).join('');
const seg = lines.splice(0, 8).splice(0, 7);
const a = seg.map(line => (line < barThreshold ? 'n' : 'w')).join('');
code.push(CHAR_SET[a]);

@@ -95,3 +67,3 @@ }

var WIDTH_TBL = [
const WIDTH_TBL = [
'212222',

@@ -205,5 +177,5 @@ '222122',

'211133',
'2331112'
'2331112',
];
var TBL_A = [
const TBL_A = [
' ',

@@ -316,5 +288,5 @@ '!',

'Stop',
'Reverse Stop'
'Reverse Stop',
];
var TBL_B = [
const TBL_B = [
' ',

@@ -427,5 +399,5 @@ '!',

'Stop',
'Reverse Stop'
'Reverse Stop',
];
var TBL_C = [
const TBL_C = [
'00',

@@ -538,18 +510,24 @@ '01',

'Stop',
'Reverse Stop'
'Reverse Stop',
];
var computeGroup = function (lines) {
var factor = lines.reduce(function (pre, item) { return pre + item; }, 0) / (Math.ceil(lines.length / 6) * 11);
// factor = Math.round(factor * 10) / 10
return lines.map(function (item) { return Math.round(item / factor) || 1; });
const computeGroup = (lines) => {
const count = lines.length - 13;
const factor = lines.reduce((pre, item, i) => {
if (i >= count)
return pre;
return pre + item;
}, 0) /
(Math.ceil(count / 6) * 11);
console.log(factor);
return lines.map(item => Math.round(item / factor) || 1);
};
function decoder$1(lines) {
var lookupTBL = TBL_B;
const code = [];
let lookupTBL = TBL_B;
// let sumOP = 0
var letterKey;
var letterCode;
var letterCodePrev;
var keyIndex;
var code = [];
var computedLines = computeGroup(lines);
let letterKey;
let letterCode;
let letterCodePrev;
let keyIndex;
const computedLines = computeGroup(lines);
if (!computedLines)

@@ -559,8 +537,5 @@ return '';

computedLines.pop();
// skip check code and stop code using -12
for (var i = 0; i * 6 < computedLines.length - 12; i += 1) {
// skip check code and stop code using -13
for (let i = 0; i * 6 < computedLines.length - 13; i += 1) {
letterKey = computedLines.slice(i * 6, (i + 1) * 6).join('');
if (letterKey === '114141') {
letterKey = '113141';
}
keyIndex = WIDTH_TBL.indexOf(letterKey);

@@ -599,6 +574,7 @@ letterCode = lookupTBL[keyIndex];

// if (sumOP % 103 !== WIDTH_TBL.indexOf(letterKey)) return ''
console.log('CODE: ', code.join(''));
return code.join('');
}
var CHAR_SET$1 = {
const CHAR_SET$1 = {
nnnwwnwnn: '0',

@@ -647,12 +623,12 @@ wnnwnnnnw: '1',

nnnwnwnwn: '%',
nwnnwnwnn: '*'
nwnnwnwnn: '*',
};
function decoder$2(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return pre + item; }, 0) / lines.length);
const code = [];
const barThreshold = Math.ceil(lines.reduce((pre, item) => pre + item, 0) / lines.length);
// Read one encoded character at a time.
while (lines.length > 0) {
var sequenceBar = lines
const sequenceBar = lines
.splice(0, 10)
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.map(line => (line > barThreshold ? 'w' : 'n'))
.slice(0, 9)

@@ -667,3 +643,3 @@ .join('');

var CHAR_SET$2 = [
const CHAR_SET$2 = [
{ '100010100': '0' },

@@ -716,11 +692,11 @@ { '101001000': '1' },

{ '100110010': '(+)' },
{ '101011110': '*' }
{ '101011110': '*' },
];
function decoder$3(lines) {
var code = [];
var binary = [];
const code = [];
const binary = [];
// remove termination bar
lines.pop();
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return pre + item; }, 0) / lines.length);
var minBarWidth = Math.ceil(lines.reduce(function (pre, item) {
const barThreshold = Math.ceil(lines.reduce((pre, item) => pre + item, 0) / lines.length);
const minBarWidth = Math.ceil(lines.reduce((pre, item) => {
if (item < barThreshold)

@@ -731,4 +707,4 @@ return (pre + item) / 2;

// leave the padded *
for (var i = 0; i < lines.length; i += 1) {
var segment = lines[i];
for (let i = 0; i < lines.length; i += 1) {
let segment = lines[i];
while (segment > 0) {

@@ -744,18 +720,15 @@ if (i % 2 === 0) {

}
var _loop_1 = function (i) {
var searcKey = binary.slice(i, i + 9).join('');
var char = CHAR_SET$2.filter(function (item) { return Object.keys(item)[0] === searcKey; });
for (let i = 0; i < binary.length; i += 9) {
const searcKey = binary.slice(i, i + 9).join('');
const char = CHAR_SET$2.filter(item => Object.keys(item)[0] === searcKey);
code.push(char[0][searcKey]);
};
for (var i = 0; i < binary.length; i += 9) {
_loop_1(i);
}
if (code.shift() !== '*' || code.pop() !== '*')
return '';
var K = code.pop();
var sum = 0;
var letter;
var Value;
var findValue = function (item) { return Object.values(item)[0] === letter; };
for (var i = code.length - 1; i >= 0; i -= 1) {
const K = code.pop();
let sum = 0;
let letter;
let Value;
const findValue = (item) => Object.values(item)[0] === letter;
for (let i = code.length - 1; i >= 0; i -= 1) {
letter = code[i];

@@ -767,5 +740,5 @@ Value = CHAR_SET$2.indexOf(CHAR_SET$2.filter(findValue)[0]);

return '';
var C = code.pop();
const C = code.pop();
sum = 0;
for (var i = code.length - 1; i >= 0; i -= 1) {
for (let i = code.length - 1; i >= 0; i -= 1) {
letter = code[i];

@@ -780,3 +753,3 @@ Value = CHAR_SET$2.indexOf(CHAR_SET$2.filter(findValue)[0]);

var CHAR_SET$3 = [
const CHAR_SET$3 = [
'nnwwn',

@@ -791,16 +764,16 @@ 'wnnnw',

'wnnwn',
'nwnwn'
'nwnwn',
];
function decoder$4(lines, type) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return (pre + item) / 2; }, 0));
const code = [];
const barThreshold = Math.ceil(lines.reduce((pre, item) => (pre + item) / 2, 0));
if (type === 'interleaved') {
// extract start/ends pair
var startChar = lines
const startChar = lines
.splice(0, 4)
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');
var endChar = lines
const endChar = lines
.splice(lines.length - 3, 3)
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -811,11 +784,11 @@ if (startChar !== 'nnnn' || endChar !== 'wnn')

while (lines.length > 0) {
var seg = lines.splice(0, 10);
var a = seg
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
const seg = lines.splice(0, 10);
const a = seg
.filter((item, index) => index % 2 === 0)
.map(line => (line > barThreshold ? 'w' : 'n'))
.join('');
code.push(CHAR_SET$3.indexOf(a));
var b = seg
.filter(function (item, index) { return index % 2 !== 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
const b = seg
.filter((item, index) => index % 2 !== 0)
.map(line => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -827,11 +800,11 @@ code.push(CHAR_SET$3.indexOf(b));

// extract start/ends pair
var startChar = lines
const startChar = lines
.splice(0, 6)
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.filter((item, index) => index % 2 === 0)
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');
var endChar = lines
const endChar = lines
.splice(lines.length - 5, 5)
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.filter((item, index) => index % 2 === 0)
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -842,6 +815,6 @@ if (startChar !== 'wwn' || endChar !== 'wnw')

while (lines.length > 0) {
var a = lines
const a = lines
.splice(0, 10)
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.filter((item, index) => index % 2 === 0)
.map(line => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -854,3 +827,3 @@ code.push(CHAR_SET$3.indexOf(a));

var UPC_SET = {
const UPC_SET = {
'3211': '0',

@@ -865,8 +838,8 @@ '2221': '1',

'1213': '8',
'3112': '9'
'3112': '9',
};
function decoder$5(lines) {
var code = '';
let code = '';
// start indicator/reference lines
var bar = (lines[0] + lines[1] + lines[2]) / 3;
const bar = (lines[0] + lines[1] + lines[2]) / 3;
// remove start pattern

@@ -882,8 +855,6 @@ lines.shift();

lines.splice(24, 5);
for (var i = 0; i < lines.length; i += 4) {
var group = lines.slice(i, i + 4);
var digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(function (digit) {
return digit === 1.5 ? 1 : Math.round(digit);
});
var result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
for (let i = 0; i < lines.length; i += 4) {
const group = lines.slice(i, i + 4);
const digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(digit => digit === 1.5 ? 1 : Math.round(digit));
const result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
if (result) {

@@ -899,3 +870,3 @@ code += result;

var UPC_SET$1 = {
const UPC_SET$1 = {
'3211': '0',

@@ -910,8 +881,8 @@ '2221': '1',

'1213': '8',
'3112': '9'
'3112': '9',
};
function decoder$6(lines) {
var code = '';
let code = '';
// start indicator/reference lines
var bar = (lines[0] + lines[1] + lines[2]) / 3;
const bar = (lines[0] + lines[1] + lines[2]) / 3;
// remove start pattern

@@ -927,8 +898,6 @@ lines.shift();

lines.splice(16, 5);
for (var i = 0; i < lines.length; i += 4) {
var group = lines.slice(i, i + 4);
var digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(function (digit) {
return digit === 1.5 ? 1 : Math.round(digit);
});
var result = UPC_SET$1[digits.join('')] || UPC_SET$1[digits.reverse().join('')];
for (let i = 0; i < lines.length; i += 4) {
const group = lines.slice(i, i + 4);
const digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(digit => digit === 1.5 ? 1 : Math.round(digit));
const result = UPC_SET$1[digits.join('')] || UPC_SET$1[digits.reverse().join('')];
if (result) {

@@ -944,2 +913,62 @@ code += result;

function applyAdaptiveThreshold(data, width, height) {
const integralImage = new Array(width * height).fill(0);
const channels = data.length / (width * height);
const t = 0.15; // threshold percentage
const s = Math.floor(height); // bracket size
const s2 = Math.floor(s / 2);
for (let i = 0; i < width; i += 1) {
let sum = 0;
for (let j = 0; j < height; j += 1) {
const pureIndex = j * width + i;
const index = pureIndex * channels;
// greyscale
const v = (data[index] + data[index + 1] + data[index + 2]) / 3;
data[index] = v;
data[index + 1] = v;
data[index + 2] = v;
sum += v;
if (i === 0) {
integralImage[pureIndex] = sum;
}
else {
integralImage[pureIndex] = integralImage[pureIndex - 1] + sum;
}
}
}
// skip edge rows
for (let i = 0; i < width; i += 1) {
for (let j = 0; j < height; j += 1) {
const pureIndex = j * width + i;
const index = pureIndex * channels;
// no. of pixels per window
let x1 = i - s2;
let x2 = i + s2;
let y1 = j - s2;
let y2 = j + s2;
if (x1 < 0)
x1 = 0;
if (x2 >= width)
x2 = width - 1;
if (y1 < 0)
y1 = 0;
if (y2 >= height)
y2 = height - 1;
const count = (x2 - x1) * (y2 - y1);
const sum = integralImage[y2 * width + x2] -
integralImage[y1 * width + x2] -
integralImage[y2 * width + x1] +
integralImage[y1 * width + x1];
let v = 255;
if (data[index] * count < sum * (1 - t)) {
v = 0;
}
data[index] = v;
data[index + 1] = v;
data[index + 2] = v;
}
}
return data;
}
function combineAllPossible(finalResult, result) {

@@ -949,5 +978,5 @@ if (finalResult === '' || result === '') {

}
var finalResultArr = finalResult.split('');
var resultArr = result.split('');
resultArr.forEach(function (char, index) {
const finalResultArr = finalResult.split('');
const resultArr = result.split('');
resultArr.forEach((char, index) => {
if (!finalResultArr[index] || finalResultArr[index] === '?') {

@@ -963,8 +992,8 @@ if (char && char !== '?') {

function createImageData(image) {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx)
throw new Error('canvas not available');
var width = image.naturalWidth;
var height = image.naturalHeight;
const width = image.naturalWidth;
const height = image.naturalHeight;
canvas.width = width;

@@ -977,3 +1006,3 @@ canvas.height = height;

function isUrl(s) {
var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-/]))?/;
const regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-/]))?/;
if (s.startsWith('#'))

@@ -984,53 +1013,51 @@ return false;

var isNode = typeof process === 'object' && process.release && process.release.name === 'node';
const isNode = typeof process === 'object' && process.release && process.release.name === 'node';
function getImageDataFromSource(source) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, new Promise(function (resolve, reject) {
if (typeof source === 'string') {
if (source.startsWith('#')) {
var imageElement = document.getElementById(source.substr(1));
if (imageElement instanceof HTMLImageElement) {
resolve(createImageData(imageElement));
}
if (imageElement instanceof HTMLCanvasElement) {
var ctx = imageElement.getContext('2d');
if (!ctx)
throw new Error('Cannot create canvas 2d context');
resolve(ctx.getImageData(0, 0, imageElement.width, imageElement.height));
}
reject(new Error('Invalid image source specified!'));
}
else if (isUrl(source)) {
var img_1 = new Image();
img_1.onerror = reject;
img_1.onload = function () { return resolve(createImageData(img_1)); };
img_1.src = source;
}
else if (isNode) {
Jimp.read(source, function (err, image) {
if (err) {
reject(err);
}
else {
var _a = image.bitmap, data = _a.data, width = _a.width, height = _a.height;
resolve({
data: Uint8ClampedArray.from(data),
width: width,
height: height
});
}
});
}
return __awaiter(this, void 0, void 0, function* () {
return new Promise((resolve, reject) => {
if (typeof source === 'string') {
if (source.startsWith('#')) {
const imageElement = document.getElementById(source.substr(1));
if (imageElement instanceof HTMLImageElement) {
resolve(createImageData(imageElement));
}
else if (source instanceof HTMLImageElement) {
resolve(createImageData(source));
}
else if (source instanceof HTMLCanvasElement) {
var ctx = source.getContext('2d');
if (imageElement instanceof HTMLCanvasElement) {
const ctx = imageElement.getContext('2d');
if (!ctx)
throw new Error('Cannot create canvas 2d context');
resolve(ctx.getImageData(0, 0, source.width, source.height));
resolve(ctx.getImageData(0, 0, imageElement.width, imageElement.height));
}
})];
reject(new Error('Invalid image source specified!'));
}
else if (isUrl(source)) {
const img = new Image();
img.onerror = reject;
img.onload = () => resolve(createImageData(img));
img.src = source;
}
else if (isNode) {
Jimp.read(source, (err, image) => {
if (err) {
reject(err);
}
else {
const { data, width, height } = image.bitmap;
resolve({
data: Uint8ClampedArray.from(data),
width,
height,
});
}
});
}
}
else if (source instanceof HTMLImageElement) {
resolve(createImageData(source));
}
else if (source instanceof HTMLCanvasElement) {
const ctx = source.getContext('2d');
if (!ctx)
throw new Error('Cannot create canvas 2d context');
resolve(ctx.getImageData(0, 0, source.width, source.height));
}
});

@@ -1040,21 +1067,53 @@ });

function applyMedianFilter(data, width, height, windowSize = 3) {
const channels = data.length / (width * height);
const filterWindow = [];
const limit = (windowSize - 1) / 2;
for (let i = limit * -1; i < limit + 1; i += 1) {
for (let j = limit * -1; j < limit + 1; j += 1) {
filterWindow.push([i, j]);
}
}
for (let col = limit; col < width - limit; col += 1) {
for (let row = limit; row < height - limit; row += 1) {
const index = (row * width + col) * channels;
const arr = [];
for (let z = 0; z < filterWindow.length; z += 1) {
const i = ((row + filterWindow[z][0]) * width + (col + filterWindow[z][1])) * channels;
const average = Math.sqrt((Math.pow(data[i], 2) + Math.pow(data[i + 1], 2) + Math.pow(data[i + 2], 2)) / 3);
arr.push(average);
}
const sorted = arr.sort((a, b) => a - b);
const medianValue = sorted[Math.floor(sorted.length / 2)];
// const thresholdValue = medianValue >= 180 ? 255 : 0
data[index + 0] = medianValue;
data[index + 1] = medianValue;
data[index + 2] = medianValue;
if (channels === 4)
data[index + 3] = 255;
}
}
return data;
}
function getLines(data, width, height) {
var channels = data.length / (width * height);
var lines = [];
var count = 0;
var colSum = 0;
var colAvg = 0;
var colAvgLast = 0;
for (var col = 0; col < width; col += 1) {
colSum = 0;
for (var row = 0; row < height; row += 1) {
colSum += data[(row * width + col) * channels];
const dataSlice = applyMedianFilter(data, width, height);
const channels = dataSlice.length / (width * height);
const lines = [];
let count = 0;
let columnAverageLast = 0;
for (let column = 0; column < width; column += 1) {
let columnSum = 0;
let columnAverage = 0;
for (let row = 0; row < height; row += 1) {
const index = (row * width + column) * channels;
columnSum += Math.sqrt((Math.pow(data[index], 2) + Math.pow(data[index + 1], 2) + Math.pow(data[index + 2], 2)) / 3);
}
// atleast 75% of the pixels are same in column
colAvg = colSum / height >= 127 ? 255 : 0;
// skip white padding in the start
if (count === 0 && colAvg === 255)
// pixels are same in column
columnAverage = columnSum / height >= 127 ? 255 : 0;
// skip white padding in the start & end
if (columnAverage === 255 && count === 0)
continue;
// count line width
if (colAvg === colAvgLast) {
if (columnAverage === columnAverageLast) {
count += 1;

@@ -1064,7 +1123,7 @@ }

lines.push(count);
columnAverageLast = columnAverage;
count = 1;
colAvgLast = colAvg;
}
// skip padding in the last
if (col === width - 1 && colAvg === 0) {
if (column === width - 1 && columnAverage === 0) {
lines.push(count);

@@ -1076,78 +1135,3 @@ }

function applyAdaptiveThreshold(data, width, height) {
var integralImage = new Array(width * height).fill(0);
var channels = data.length / (width * height);
var t = 0.15; // threshold percentage
var s = Math.floor(width / 4); // bracket size
var s2 = Math.ceil(s / 2);
for (var i = 0; i < width; i += 1) {
var sum = 0;
for (var j = 0; j < height; j += 1) {
var pureIndex = j * width + i;
var index = pureIndex * channels;
// greyscale
var v = (data[index] + data[index + 1] + data[index + 2]) / 3;
data[index] = v;
data[index + 1] = v;
data[index + 2] = v;
sum += v;
if (i === 0) {
integralImage[pureIndex] = sum;
}
else {
integralImage[pureIndex] = integralImage[pureIndex - 1] + sum;
}
}
}
// skip edge rows
for (var i = 0; i < width; i += 1) {
for (var j = 0; j < height; j += 1) {
var pureIndex = j * width + i;
var index = pureIndex * channels;
// no. of pixels per window
var x1 = i - s2;
var x2 = i + s2;
var y1 = j - s2;
var y2 = j + s2;
if (x1 < 0)
x1 = 0;
if (x2 >= width)
x2 = width - 1;
if (y1 < 0)
y1 = 0;
if (y2 >= height)
y2 = height - 1;
var count = (x2 - x1) * (y2 - y1);
var sum = integralImage[y2 * width + x2] -
integralImage[y1 * width + x2] -
integralImage[y2 * width + x1] +
integralImage[y1 * width + x1];
var v = 255;
if (data[index] * count < sum * (1 - t)) {
v = 0;
}
data[index] = v;
data[index + 1] = v;
data[index + 2] = v;
}
}
return data;
}
function applySimpleThreshold(data, width, height) {
var channels = data.length / (width * height);
for (var i = 0; i < data.length; i += channels) {
var r = data[i];
var g = data[i + 1];
var b = data[i + 2];
var v = (r + g + b) / 3;
v = v >= 127 ? 255 : 0;
data[i] = v;
data[i + 1] = v;
data[i + 2] = v;
}
return data;
}
var isTestEnv = process && process.env.NODE_ENV === 'test';
const isTestEnv = process && process.env.NODE_ENV === 'test';
(function (BARCODE_DECODERS) {

@@ -1165,86 +1149,69 @@ BARCODE_DECODERS["code-128"] = "code-128";

}
function javascriptBarcodeReader(_a) {
var image = _a.image, barcode = _a.barcode, barcodeType = _a.barcodeType, options = _a.options;
return __awaiter(this, void 0, void 0, function () {
var decoder$7, useSinglePass, imageData, _b, width, height, data, channels, finalResult, sPoints, slineStep, rowsToScan, i, sPoint, start, end, dataSlice, lines, result;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
switch (barcode) {
case exports.BARCODE_DECODERS.codabar:
decoder$7 = decoder;
break;
case exports.BARCODE_DECODERS['code-128']:
decoder$7 = decoder$1;
break;
case exports.BARCODE_DECODERS['code-39']:
decoder$7 = decoder$2;
break;
case exports.BARCODE_DECODERS['code-93']:
decoder$7 = decoder$3;
break;
case exports.BARCODE_DECODERS['code-2of5']:
decoder$7 = decoder$4;
break;
case exports.BARCODE_DECODERS['ean-13']:
decoder$7 = decoder$5;
break;
case exports.BARCODE_DECODERS['ean-8']:
decoder$7 = decoder$6;
break;
default:
throw new Error("Invalid barcode specified. Available decoders: " + exports.BARCODE_DECODERS + ".");
}
useSinglePass = isTestEnv || (options && options.singlePass) || false;
if (!isImageLike(image)) return [3 /*break*/, 1];
_b = image;
return [3 /*break*/, 3];
case 1: return [4 /*yield*/, getImageDataFromSource(image)];
case 2:
_b = _c.sent();
_c.label = 3;
case 3:
imageData = _b;
width = imageData.width;
height = imageData.height;
data = imageData.data;
channels = data.length / (width * height);
finalResult = '';
// apply adaptive threshold
if (options && options.useAdaptiveThreshold) {
data = applyAdaptiveThreshold(data, width, height);
}
sPoints = [5, 6, 4, 7, 3, 8, 2, 9, 1];
slineStep = Math.round(height / sPoints.length);
rowsToScan = Math.min(5, height);
for (i = 0; i < sPoints.length; i += 1) {
sPoint = sPoints[i];
start = channels * width * Math.floor(slineStep * sPoint);
end = start + rowsToScan * channels * width;
dataSlice = data.slice(start, end);
if (!options || !options.useAdaptiveThreshold) {
dataSlice = applySimpleThreshold(dataSlice, width, height);
}
lines = getLines(dataSlice, width, rowsToScan);
if (lines.length === 0) {
if (useSinglePass)
throw new Error('Failed to extract barcode!');
continue;
}
result = decoder$7(lines, barcodeType);
if (useSinglePass)
return [2 /*return*/, result];
if (!result)
continue;
if (!result.includes('?'))
return [2 /*return*/, result];
finalResult = combineAllPossible(finalResult, result);
if (!finalResult.includes('?'))
return [2 /*return*/, finalResult];
if (i === sPoints.length - 1)
return [2 /*return*/, finalResult];
}
function javascriptBarcodeReader({ image, barcode, barcodeType, options, }) {
return __awaiter(this, void 0, void 0, function* () {
let decoder$7;
switch (barcode) {
case exports.BARCODE_DECODERS.codabar:
decoder$7 = decoder;
break;
case exports.BARCODE_DECODERS['code-128']:
decoder$7 = decoder$1;
break;
case exports.BARCODE_DECODERS['code-39']:
decoder$7 = decoder$2;
break;
case exports.BARCODE_DECODERS['code-93']:
decoder$7 = decoder$3;
break;
case exports.BARCODE_DECODERS['code-2of5']:
decoder$7 = decoder$4;
break;
case exports.BARCODE_DECODERS['ean-13']:
decoder$7 = decoder$5;
break;
case exports.BARCODE_DECODERS['ean-8']:
decoder$7 = decoder$6;
break;
default:
throw new Error(`Invalid barcode specified. Available decoders: ${exports.BARCODE_DECODERS}.`);
}
const useSinglePass = isTestEnv || (options && options.singlePass) || false;
const imageData = isImageLike(image) ? image : yield getImageDataFromSource(image);
const width = imageData.width;
const height = imageData.height;
const channels = imageData.data.length / (width * height);
let finalResult = '';
// apply adaptive threshold
if (options && options.useAdaptiveThreshold) {
applyAdaptiveThreshold(imageData.data, width, height);
}
// check points for barcode location
const sPoints = [5, 6, 4, 7, 3, 8, 2, 9, 1];
const slineStep = Math.round(height / sPoints.length);
const rowsToScan = Math.min(3, height);
for (let i = 0; i < sPoints.length; i += 1) {
const sPoint = sPoints[i];
const start = channels * width * Math.floor(slineStep * sPoint);
const end = start + rowsToScan * channels * width;
const lines = getLines(imageData.data.slice(start, end), width, rowsToScan);
if (lines.length === 0) {
if (useSinglePass)
throw new Error('Failed to extract barcode!');
continue;
}
});
// Run the decoder
const result = decoder$7(lines, barcodeType);
if (useSinglePass)
return result;
if (!result)
continue;
if (!result.includes('?'))
return result;
finalResult = combineAllPossible(finalResult, result);
if (!finalResult.includes('?'))
return finalResult;
if (i === sPoints.length - 1)
return finalResult;
}
throw new Error('Failed to extract barcode!');
});

@@ -1251,0 +1218,0 @@ }

12

dist/lib/src/codabar/index.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var CHAR_SET = {
const CHAR_SET = {
nnnnnww: '0',

@@ -23,11 +23,11 @@ nnnnwwn: '1',

nwnwnnw: 'C',
nnnwwwn: 'D'
nnnwwwn: 'D',
};
function decoder(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return (pre + item) / 2; }, 0));
const code = [];
const barThreshold = Math.ceil(lines.reduce((pre, item) => (pre + item) / 2, 0));
// Read one encoded character at a time.
while (lines.length > 0) {
var seg = lines.splice(0, 8).splice(0, 7);
var a = seg.map(function (line) { return (line < barThreshold ? 'n' : 'w'); }).join('');
const seg = lines.splice(0, 8).splice(0, 7);
const a = seg.map(line => (line < barThreshold ? 'n' : 'w')).join('');
code.push(CHAR_SET[a]);

@@ -34,0 +34,0 @@ }

52

dist/lib/src/code-128/index.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var WIDTH_TBL = [
const WIDTH_TBL = [
'212222',

@@ -112,5 +112,5 @@ '222122',

'211133',
'2331112'
'2331112',
];
var TBL_A = [
const TBL_A = [
' ',

@@ -223,5 +223,5 @@ '!',

'Stop',
'Reverse Stop'
'Reverse Stop',
];
var TBL_B = [
const TBL_B = [
' ',

@@ -334,5 +334,5 @@ '!',

'Stop',
'Reverse Stop'
'Reverse Stop',
];
var TBL_C = [
const TBL_C = [
'00',

@@ -445,18 +445,24 @@ '01',

'Stop',
'Reverse Stop'
'Reverse Stop',
];
var computeGroup = function (lines) {
var factor = lines.reduce(function (pre, item) { return pre + item; }, 0) / (Math.ceil(lines.length / 6) * 11);
// factor = Math.round(factor * 10) / 10
return lines.map(function (item) { return Math.round(item / factor) || 1; });
const computeGroup = (lines) => {
const count = lines.length - 13;
const factor = lines.reduce((pre, item, i) => {
if (i >= count)
return pre;
return pre + item;
}, 0) /
(Math.ceil(count / 6) * 11);
console.log(factor);
return lines.map(item => Math.round(item / factor) || 1);
};
function decoder(lines) {
var lookupTBL = TBL_B;
const code = [];
let lookupTBL = TBL_B;
// let sumOP = 0
var letterKey;
var letterCode;
var letterCodePrev;
var keyIndex;
var code = [];
var computedLines = computeGroup(lines);
let letterKey;
let letterCode;
let letterCodePrev;
let keyIndex;
const computedLines = computeGroup(lines);
if (!computedLines)

@@ -466,8 +472,5 @@ return '';

computedLines.pop();
// skip check code and stop code using -12
for (var i = 0; i * 6 < computedLines.length - 12; i += 1) {
// skip check code and stop code using -13
for (let i = 0; i * 6 < computedLines.length - 13; i += 1) {
letterKey = computedLines.slice(i * 6, (i + 1) * 6).join('');
if (letterKey === '114141') {
letterKey = '113141';
}
keyIndex = WIDTH_TBL.indexOf(letterKey);

@@ -506,2 +509,3 @@ letterCode = lookupTBL[keyIndex];

// if (sumOP % 103 !== WIDTH_TBL.indexOf(letterKey)) return ''
console.log('CODE: ', code.join(''));
return code.join('');

@@ -508,0 +512,0 @@ }

12

dist/lib/src/code-39/index.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var CHAR_SET = {
const CHAR_SET = {
nnnwwnwnn: '0',

@@ -47,12 +47,12 @@ wnnwnnnnw: '1',

nnnwnwnwn: '%',
nwnnwnwnn: '*'
nwnnwnwnn: '*',
};
function decoder(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return pre + item; }, 0) / lines.length);
const code = [];
const barThreshold = Math.ceil(lines.reduce((pre, item) => pre + item, 0) / lines.length);
// Read one encoded character at a time.
while (lines.length > 0) {
var sequenceBar = lines
const sequenceBar = lines
.splice(0, 10)
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.map(line => (line > barThreshold ? 'w' : 'n'))
.slice(0, 9)

@@ -59,0 +59,0 @@ .join('');

41

dist/lib/src/code-93/index.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var CHAR_SET = [
const CHAR_SET = [
{ '100010100': '0' },

@@ -51,11 +51,11 @@ { '101001000': '1' },

{ '100110010': '(+)' },
{ '101011110': '*' }
{ '101011110': '*' },
];
function decoder(lines) {
var code = [];
var binary = [];
const code = [];
const binary = [];
// remove termination bar
lines.pop();
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return pre + item; }, 0) / lines.length);
var minBarWidth = Math.ceil(lines.reduce(function (pre, item) {
const barThreshold = Math.ceil(lines.reduce((pre, item) => pre + item, 0) / lines.length);
const minBarWidth = Math.ceil(lines.reduce((pre, item) => {
if (item < barThreshold)

@@ -66,4 +66,4 @@ return (pre + item) / 2;

// leave the padded *
for (var i = 0; i < lines.length; i += 1) {
var segment = lines[i];
for (let i = 0; i < lines.length; i += 1) {
let segment = lines[i];
while (segment > 0) {

@@ -79,18 +79,15 @@ if (i % 2 === 0) {

}
var _loop_1 = function (i) {
var searcKey = binary.slice(i, i + 9).join('');
var char = CHAR_SET.filter(function (item) { return Object.keys(item)[0] === searcKey; });
for (let i = 0; i < binary.length; i += 9) {
const searcKey = binary.slice(i, i + 9).join('');
const char = CHAR_SET.filter(item => Object.keys(item)[0] === searcKey);
code.push(char[0][searcKey]);
};
for (var i = 0; i < binary.length; i += 9) {
_loop_1(i);
}
if (code.shift() !== '*' || code.pop() !== '*')
return '';
var K = code.pop();
var sum = 0;
var letter;
var Value;
var findValue = function (item) { return Object.values(item)[0] === letter; };
for (var i = code.length - 1; i >= 0; i -= 1) {
const K = code.pop();
let sum = 0;
let letter;
let Value;
const findValue = (item) => Object.values(item)[0] === letter;
for (let i = code.length - 1; i >= 0; i -= 1) {
letter = code[i];

@@ -102,5 +99,5 @@ Value = CHAR_SET.indexOf(CHAR_SET.filter(findValue)[0]);

return '';
var C = code.pop();
const C = code.pop();
sum = 0;
for (var i = code.length - 1; i >= 0; i -= 1) {
for (let i = code.length - 1; i >= 0; i -= 1) {
letter = code[i];

@@ -107,0 +104,0 @@ Value = CHAR_SET.indexOf(CHAR_SET.filter(findValue)[0]);

48

dist/lib/src/code2of5/index.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var CHAR_SET = [
const CHAR_SET = [
'nnwwn',

@@ -13,16 +13,16 @@ 'wnnnw',

'wnnwn',
'nwnwn'
'nwnwn',
];
function decoder(lines, type) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) { return (pre + item) / 2; }, 0));
const code = [];
const barThreshold = Math.ceil(lines.reduce((pre, item) => (pre + item) / 2, 0));
if (type === 'interleaved') {
// extract start/ends pair
var startChar = lines
const startChar = lines
.splice(0, 4)
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');
var endChar = lines
const endChar = lines
.splice(lines.length - 3, 3)
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -33,11 +33,11 @@ if (startChar !== 'nnnn' || endChar !== 'wnn')

while (lines.length > 0) {
var seg = lines.splice(0, 10);
var a = seg
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
const seg = lines.splice(0, 10);
const a = seg
.filter((item, index) => index % 2 === 0)
.map(line => (line > barThreshold ? 'w' : 'n'))
.join('');
code.push(CHAR_SET.indexOf(a));
var b = seg
.filter(function (item, index) { return index % 2 !== 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
const b = seg
.filter((item, index) => index % 2 !== 0)
.map(line => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -49,11 +49,11 @@ code.push(CHAR_SET.indexOf(b));

// extract start/ends pair
var startChar = lines
const startChar = lines
.splice(0, 6)
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.filter((item, index) => index % 2 === 0)
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');
var endChar = lines
const endChar = lines
.splice(lines.length - 5, 5)
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.filter((item, index) => index % 2 === 0)
.map((line) => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -64,6 +64,6 @@ if (startChar !== 'wwn' || endChar !== 'wnw')

while (lines.length > 0) {
var a = lines
const a = lines
.splice(0, 10)
.filter(function (item, index) { return index % 2 === 0; })
.map(function (line) { return (line > barThreshold ? 'w' : 'n'); })
.filter((item, index) => index % 2 === 0)
.map(line => (line > barThreshold ? 'w' : 'n'))
.join('');

@@ -70,0 +70,0 @@ code.push(CHAR_SET.indexOf(a));

18

dist/lib/src/ean-13/index.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var UPC_SET = {
const UPC_SET = {
'3211': '0',

@@ -13,8 +13,8 @@ '2221': '1',

'1213': '8',
'3112': '9'
'3112': '9',
};
function decoder(lines) {
var code = '';
let code = '';
// start indicator/reference lines
var bar = (lines[0] + lines[1] + lines[2]) / 3;
const bar = (lines[0] + lines[1] + lines[2]) / 3;
// remove start pattern

@@ -30,8 +30,6 @@ lines.shift();

lines.splice(24, 5);
for (var i = 0; i < lines.length; i += 4) {
var group = lines.slice(i, i + 4);
var digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(function (digit) {
return digit === 1.5 ? 1 : Math.round(digit);
});
var result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
for (let i = 0; i < lines.length; i += 4) {
const group = lines.slice(i, i + 4);
const digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(digit => digit === 1.5 ? 1 : Math.round(digit));
const result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
if (result) {

@@ -38,0 +36,0 @@ code += result;

18

dist/lib/src/ean-8/index.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var UPC_SET = {
const UPC_SET = {
'3211': '0',

@@ -13,8 +13,8 @@ '2221': '1',

'1213': '8',
'3112': '9'
'3112': '9',
};
function decoder(lines) {
var code = '';
let code = '';
// start indicator/reference lines
var bar = (lines[0] + lines[1] + lines[2]) / 3;
const bar = (lines[0] + lines[1] + lines[2]) / 3;
// remove start pattern

@@ -30,8 +30,6 @@ lines.shift();

lines.splice(16, 5);
for (var i = 0; i < lines.length; i += 4) {
var group = lines.slice(i, i + 4);
var digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(function (digit) {
return digit === 1.5 ? 1 : Math.round(digit);
});
var result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
for (let i = 0; i < lines.length; i += 4) {
const group = lines.slice(i, i + 4);
const digits = [group[0] / bar, group[1] / bar, group[2] / bar, group[3] / bar].map(digit => digit === 1.5 ? 1 : Math.round(digit));
const result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
if (result) {

@@ -38,0 +36,0 @@ code += result;

200

dist/lib/src/index.js

@@ -11,45 +11,16 @@ "use strict";

};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
// available decoders
var codabar = require("./codabar");
var code128 = require("./code-128");
var code39 = require("./code-39");
var code93 = require("./code-93");
var code2of5 = require("./code2of5");
var ean13 = require("./ean-13");
var ean8 = require("./ean-8");
// utilities
var combineAllPossible_1 = require("./utilities/combineAllPossible");
var getImageDataFromSource_1 = require("./utilities/getImageDataFromSource");
var getLines_1 = require("./utilities/getLines");
var adaptiveThreshold_1 = require("./utilities/threshold/adaptiveThreshold");
var applySimpleThreshold_1 = require("./utilities/threshold/applySimpleThreshold");
var isTestEnv = process && process.env.NODE_ENV === 'test';
const codabar = require("./codabar");
const code128 = require("./code-128");
const code39 = require("./code-39");
const code93 = require("./code-93");
const code2of5 = require("./code2of5");
const ean13 = require("./ean-13");
const ean8 = require("./ean-8");
const adaptiveThreshold_1 = require("./utilities/adaptiveThreshold");
const combineAllPossible_1 = require("./utilities/combineAllPossible");
const getImageDataFromSource_1 = require("./utilities/getImageDataFromSource");
const getLines_1 = require("./utilities/getLines");
const isTestEnv = process && process.env.NODE_ENV === 'test';
var BARCODE_DECODERS;

@@ -68,86 +39,69 @@ (function (BARCODE_DECODERS) {

}
function javascriptBarcodeReader(_a) {
var image = _a.image, barcode = _a.barcode, barcodeType = _a.barcodeType, options = _a.options;
return __awaiter(this, void 0, void 0, function () {
var decoder, useSinglePass, imageData, _b, width, height, data, channels, finalResult, sPoints, slineStep, rowsToScan, i, sPoint, start, end, dataSlice, lines, result;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
switch (barcode) {
case BARCODE_DECODERS.codabar:
decoder = codabar.decoder;
break;
case BARCODE_DECODERS['code-128']:
decoder = code128.decoder;
break;
case BARCODE_DECODERS['code-39']:
decoder = code39.decoder;
break;
case BARCODE_DECODERS['code-93']:
decoder = code93.decoder;
break;
case BARCODE_DECODERS['code-2of5']:
decoder = code2of5.decoder;
break;
case BARCODE_DECODERS['ean-13']:
decoder = ean13.decoder;
break;
case BARCODE_DECODERS['ean-8']:
decoder = ean8.decoder;
break;
default:
throw new Error("Invalid barcode specified. Available decoders: " + BARCODE_DECODERS + ".");
}
useSinglePass = isTestEnv || (options && options.singlePass) || false;
if (!isImageLike(image)) return [3 /*break*/, 1];
_b = image;
return [3 /*break*/, 3];
case 1: return [4 /*yield*/, getImageDataFromSource_1.getImageDataFromSource(image)];
case 2:
_b = _c.sent();
_c.label = 3;
case 3:
imageData = _b;
width = imageData.width;
height = imageData.height;
data = imageData.data;
channels = data.length / (width * height);
finalResult = '';
// apply adaptive threshold
if (options && options.useAdaptiveThreshold) {
data = adaptiveThreshold_1.applyAdaptiveThreshold(data, width, height);
}
sPoints = [5, 6, 4, 7, 3, 8, 2, 9, 1];
slineStep = Math.round(height / sPoints.length);
rowsToScan = Math.min(5, height);
for (i = 0; i < sPoints.length; i += 1) {
sPoint = sPoints[i];
start = channels * width * Math.floor(slineStep * sPoint);
end = start + rowsToScan * channels * width;
dataSlice = data.slice(start, end);
if (!options || !options.useAdaptiveThreshold) {
dataSlice = applySimpleThreshold_1.applySimpleThreshold(dataSlice, width, height);
}
lines = getLines_1.getLines(dataSlice, width, rowsToScan);
if (lines.length === 0) {
if (useSinglePass)
throw new Error('Failed to extract barcode!');
continue;
}
result = decoder(lines, barcodeType);
if (useSinglePass)
return [2 /*return*/, result];
if (!result)
continue;
if (!result.includes('?'))
return [2 /*return*/, result];
finalResult = combineAllPossible_1.combineAllPossible(finalResult, result);
if (!finalResult.includes('?'))
return [2 /*return*/, finalResult];
if (i === sPoints.length - 1)
return [2 /*return*/, finalResult];
}
function javascriptBarcodeReader({ image, barcode, barcodeType, options, }) {
return __awaiter(this, void 0, void 0, function* () {
let decoder;
switch (barcode) {
case BARCODE_DECODERS.codabar:
decoder = codabar.decoder;
break;
case BARCODE_DECODERS['code-128']:
decoder = code128.decoder;
break;
case BARCODE_DECODERS['code-39']:
decoder = code39.decoder;
break;
case BARCODE_DECODERS['code-93']:
decoder = code93.decoder;
break;
case BARCODE_DECODERS['code-2of5']:
decoder = code2of5.decoder;
break;
case BARCODE_DECODERS['ean-13']:
decoder = ean13.decoder;
break;
case BARCODE_DECODERS['ean-8']:
decoder = ean8.decoder;
break;
default:
throw new Error(`Invalid barcode specified. Available decoders: ${BARCODE_DECODERS}.`);
}
const useSinglePass = isTestEnv || (options && options.singlePass) || false;
const imageData = isImageLike(image) ? image : yield getImageDataFromSource_1.getImageDataFromSource(image);
const width = imageData.width;
const height = imageData.height;
const channels = imageData.data.length / (width * height);
let finalResult = '';
// apply adaptive threshold
if (options && options.useAdaptiveThreshold) {
adaptiveThreshold_1.applyAdaptiveThreshold(imageData.data, width, height);
}
// check points for barcode location
const sPoints = [5, 6, 4, 7, 3, 8, 2, 9, 1];
const slineStep = Math.round(height / sPoints.length);
const rowsToScan = Math.min(3, height);
for (let i = 0; i < sPoints.length; i += 1) {
const sPoint = sPoints[i];
const start = channels * width * Math.floor(slineStep * sPoint);
const end = start + rowsToScan * channels * width;
const lines = getLines_1.getLines(imageData.data.slice(start, end), width, rowsToScan);
if (lines.length === 0) {
if (useSinglePass)
throw new Error('Failed to extract barcode!');
continue;
}
});
// Run the decoder
const result = decoder(lines, barcodeType);
if (useSinglePass)
return result;
if (!result)
continue;
if (!result.includes('?'))
return result;
finalResult = combineAllPossible_1.combineAllPossible(finalResult, result);
if (!finalResult.includes('?'))
return finalResult;
if (i === sPoints.length - 1)
return finalResult;
}
throw new Error('Failed to extract barcode!');
});

@@ -154,0 +108,0 @@ }

6

dist/lib/src/utilities/combineAllPossible.js

@@ -7,5 +7,5 @@ "use strict";

}
var finalResultArr = finalResult.split('');
var resultArr = result.split('');
resultArr.forEach(function (char, index) {
const finalResultArr = finalResult.split('');
const resultArr = result.split('');
resultArr.forEach((char, index) => {
if (!finalResultArr[index] || finalResultArr[index] === '?') {

@@ -12,0 +12,0 @@ if (char && char !== '?') {

8

dist/lib/src/utilities/createImageData.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function createImageData(image) {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
const canvas = document.createElement('canvas');
const ctx = canvas.getContext('2d');
if (!ctx)
throw new Error('canvas not available');
var width = image.naturalWidth;
var height = image.naturalHeight;
const width = image.naturalWidth;
const height = image.naturalHeight;
canvas.width = width;

@@ -11,0 +11,0 @@ canvas.height = height;

123

dist/lib/src/utilities/getImageDataFromSource.js

@@ -11,84 +11,55 @@ "use strict";

};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var Jimp = require("jimp");
var createImageData_1 = require("./createImageData");
var isUrl_1 = require("./isUrl");
var isNode = typeof process === 'object' && process.release && process.release.name === 'node';
const Jimp = require("jimp");
const createImageData_1 = require("./createImageData");
const isUrl_1 = require("./isUrl");
const isNode = typeof process === 'object' && process.release && process.release.name === 'node';
function getImageDataFromSource(source) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, new Promise(function (resolve, reject) {
if (typeof source === 'string') {
if (source.startsWith('#')) {
var imageElement = document.getElementById(source.substr(1));
if (imageElement instanceof HTMLImageElement) {
resolve(createImageData_1.createImageData(imageElement));
}
if (imageElement instanceof HTMLCanvasElement) {
var ctx = imageElement.getContext('2d');
if (!ctx)
throw new Error('Cannot create canvas 2d context');
resolve(ctx.getImageData(0, 0, imageElement.width, imageElement.height));
}
reject(new Error('Invalid image source specified!'));
}
else if (isUrl_1.isUrl(source)) {
var img_1 = new Image();
img_1.onerror = reject;
img_1.onload = function () { return resolve(createImageData_1.createImageData(img_1)); };
img_1.src = source;
}
else if (isNode) {
Jimp.read(source, function (err, image) {
if (err) {
reject(err);
}
else {
var _a = image.bitmap, data = _a.data, width = _a.width, height = _a.height;
resolve({
data: Uint8ClampedArray.from(data),
width: width,
height: height
});
}
});
}
return __awaiter(this, void 0, void 0, function* () {
return new Promise((resolve, reject) => {
if (typeof source === 'string') {
if (source.startsWith('#')) {
const imageElement = document.getElementById(source.substr(1));
if (imageElement instanceof HTMLImageElement) {
resolve(createImageData_1.createImageData(imageElement));
}
else if (source instanceof HTMLImageElement) {
resolve(createImageData_1.createImageData(source));
}
else if (source instanceof HTMLCanvasElement) {
var ctx = source.getContext('2d');
if (imageElement instanceof HTMLCanvasElement) {
const ctx = imageElement.getContext('2d');
if (!ctx)
throw new Error('Cannot create canvas 2d context');
resolve(ctx.getImageData(0, 0, source.width, source.height));
resolve(ctx.getImageData(0, 0, imageElement.width, imageElement.height));
}
})];
reject(new Error('Invalid image source specified!'));
}
else if (isUrl_1.isUrl(source)) {
const img = new Image();
img.onerror = reject;
img.onload = () => resolve(createImageData_1.createImageData(img));
img.src = source;
}
else if (isNode) {
Jimp.read(source, (err, image) => {
if (err) {
reject(err);
}
else {
const { data, width, height } = image.bitmap;
resolve({
data: Uint8ClampedArray.from(data),
width,
height,
});
}
});
}
}
else if (source instanceof HTMLImageElement) {
resolve(createImageData_1.createImageData(source));
}
else if (source instanceof HTMLCanvasElement) {
const ctx = source.getContext('2d');
if (!ctx)
throw new Error('Cannot create canvas 2d context');
resolve(ctx.getImageData(0, 0, source.width, source.height));
}
});

@@ -95,0 +66,0 @@ });

36

dist/lib/src/utilities/getLines.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const medianFilter_1 = require("./medianFilter");
function getLines(data, width, height) {
var channels = data.length / (width * height);
var lines = [];
var count = 0;
var colSum = 0;
var colAvg = 0;
var colAvgLast = 0;
for (var col = 0; col < width; col += 1) {
colSum = 0;
for (var row = 0; row < height; row += 1) {
colSum += data[(row * width + col) * channels];
const dataSlice = medianFilter_1.applyMedianFilter(data, width, height);
const channels = dataSlice.length / (width * height);
const lines = [];
let count = 0;
let columnAverageLast = 0;
for (let column = 0; column < width; column += 1) {
let columnSum = 0;
let columnAverage = 0;
for (let row = 0; row < height; row += 1) {
const index = (row * width + column) * channels;
columnSum += Math.sqrt((Math.pow(data[index], 2) + Math.pow(data[index + 1], 2) + Math.pow(data[index + 2], 2)) / 3);
}
// atleast 75% of the pixels are same in column
colAvg = colSum / height >= 127 ? 255 : 0;
// skip white padding in the start
if (count === 0 && colAvg === 255)
// pixels are same in column
columnAverage = columnSum / height >= 127 ? 255 : 0;
// skip white padding in the start & end
if (columnAverage === 255 && count === 0)
continue;
// count line width
if (colAvg === colAvgLast) {
if (columnAverage === columnAverageLast) {
count += 1;

@@ -26,7 +28,7 @@ }

lines.push(count);
columnAverageLast = columnAverage;
count = 1;
colAvgLast = colAvg;
}
// skip padding in the last
if (col === width - 1 && colAvg === 0) {
if (column === width - 1 && columnAverage === 0) {
lines.push(count);

@@ -33,0 +35,0 @@ }

2

dist/lib/src/utilities/isUrl.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function isUrl(s) {
var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-/]))?/;
const regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-/]))?/;
if (s.startsWith('#'))

@@ -6,0 +6,0 @@ return false;

50

dist/lib/src/utilities/medianFilter.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function applyMedianFilter(data, width, height) {
var channels = data.length / (width * height);
var window = [
[-1, -1],
[-1, 0],
[-1, 1],
[0, -1],
[0, 0],
[0, 1],
[1, -1],
[1, 0],
[1, 1]
];
for (var col = 1; col < width - 1; col += 1) {
for (var row = 1; row < height - 1; row += 1) {
var i = (row * width + col) * channels;
var arr = [];
for (var z = 0; z < window.length; z += 1) {
var i_1 = ((row + window[z][0]) * width + (col + window[z][1])) * channels;
var v_1 = (data[i_1] + data[i_1 + 1] + data[i_1 + 2]) / 3;
arr.push(v_1);
function applyMedianFilter(data, width, height, windowSize = 3) {
const channels = data.length / (width * height);
const filterWindow = [];
const limit = (windowSize - 1) / 2;
for (let i = limit * -1; i < limit + 1; i += 1) {
for (let j = limit * -1; j < limit + 1; j += 1) {
filterWindow.push([i, j]);
}
}
for (let col = limit; col < width - limit; col += 1) {
for (let row = limit; row < height - limit; row += 1) {
const index = (row * width + col) * channels;
const arr = [];
for (let z = 0; z < filterWindow.length; z += 1) {
const i = ((row + filterWindow[z][0]) * width + (col + filterWindow[z][1])) * channels;
const average = Math.sqrt((Math.pow(data[i], 2) + Math.pow(data[i + 1], 2) + Math.pow(data[i + 2], 2)) / 3);
arr.push(average);
}
var v = arr.sort(function (a, b) { return a - b; })[4] >= 127 ? 255 : 0;
data[i] = v;
data[i + 1] = v;
data[i + 2] = v;
const sorted = arr.sort((a, b) => a - b);
const medianValue = sorted[Math.floor(sorted.length / 2)];
// const thresholdValue = medianValue >= 180 ? 255 : 0
data[index + 0] = medianValue;
data[index + 1] = medianValue;
data[index + 2] = medianValue;
if (channels === 4)
data[index + 3] = 255;
}

@@ -30,0 +30,0 @@ }

852

dist/lib/test/index.test.js

@@ -11,47 +11,18 @@ "use strict";

};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
var Jimp = require("jimp");
var path = require("path");
var index_1 = require("../src/index");
var combineAllPossible_1 = require("../src/utilities/combineAllPossible");
var getImageDataFromSource_1 = require("../src/utilities/getImageDataFromSource");
var isUrl_1 = require("../src/utilities/isUrl");
var median_1 = require("../src/utilities/median");
var medianFilter_1 = require("../src/utilities/medianFilter");
const Jimp = require("jimp");
const path = require("path");
const index_1 = require("../src/index");
const combineAllPossible_1 = require("../src/utilities/combineAllPossible");
const getImageDataFromSource_1 = require("../src/utilities/getImageDataFromSource");
const getLines_1 = require("../src/utilities/getLines");
const isUrl_1 = require("../src/utilities/isUrl");
const medianFilter_1 = require("../src/utilities/medianFilter");
function loadImage(src) {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2 /*return*/, new Promise(function (resolve, reject) {
var img = new Image();
img.onerror = reject;
img.onload = function () { return resolve(img); };
img.src = src;
})];
return __awaiter(this, void 0, void 0, function* () {
return new Promise((resolve, reject) => {
const img = new Image();
img.onerror = reject;
img.onload = () => resolve(img);
img.src = src;
});

@@ -61,126 +32,97 @@ });

function loadCanvas(img) {
var canvas = document.createElement('canvas');
const canvas = document.createElement('canvas');
canvas.width = img.naturalWidth;
canvas.height = img.naturalHeight;
var ctx = canvas.getContext('2d');
const ctx = canvas.getContext('2d');
ctx === null || ctx === void 0 ? void 0 : ctx.drawImage(img, 0, 0);
return canvas;
}
beforeAll(function () { return __awaiter(void 0, void 0, void 0, function () {
var imageUrl, img, canvas;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
imageUrl = 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png';
return [4 /*yield*/, loadImage(imageUrl)];
case 1:
img = _a.sent();
img.id = 'Code_93_wikipedia_image';
canvas = loadCanvas(img);
canvas.id = 'Code_93_wikipedia_canvas';
document.body.appendChild(img);
document.body.appendChild(canvas);
return [2 /*return*/];
}
});
}); });
describe('get imageData from source', function () {
test('should get imageData from url', function () { return __awaiter(void 0, void 0, void 0, function () {
var url, dataSource;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
url = 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png';
return [4 /*yield*/, getImageDataFromSource_1.getImageDataFromSource(url)];
case 1:
dataSource = _a.sent();
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
return [2 /*return*/];
}
});
}); });
test('should get imageData from file path', function () { return __awaiter(void 0, void 0, void 0, function () {
var url, dataSource;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
url = path.resolve('./test/sample-images/codabar.jpg');
return [4 /*yield*/, getImageDataFromSource_1.getImageDataFromSource(url)];
case 1:
dataSource = _a.sent();
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
return [2 /*return*/];
}
});
}); });
test('should get imageData from HTMLImageElement id', function () { return __awaiter(void 0, void 0, void 0, function () {
var dataSource;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, getImageDataFromSource_1.getImageDataFromSource('#Code_93_wikipedia_image')];
case 1:
dataSource = _a.sent();
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
return [2 /*return*/];
}
});
}); });
test('should get imageData from HTMLCanvasElement id', function () { return __awaiter(void 0, void 0, void 0, function () {
var dataSource;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, getImageDataFromSource_1.getImageDataFromSource('#Code_93_wikipedia_canvas')];
case 1:
dataSource = _a.sent();
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
return [2 /*return*/];
}
});
}); });
test('should get imageData from HTMLImageElement', function () { return __awaiter(void 0, void 0, void 0, function () {
var imageElement, dataSource;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
imageElement = document.getElementById('Code_93_wikipedia_image');
if (!imageElement || !(imageElement instanceof HTMLImageElement))
return [2 /*return*/];
return [4 /*yield*/, getImageDataFromSource_1.getImageDataFromSource(imageElement)];
case 1:
dataSource = _a.sent();
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
return [2 /*return*/];
}
});
}); });
test('should get imageData from HTMLCanvasElement', function () { return __awaiter(void 0, void 0, void 0, function () {
var imageElement, dataSource;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
imageElement = document.getElementById('Code_93_wikipedia_canvas');
if (!imageElement || !(imageElement instanceof HTMLCanvasElement))
return [2 /*return*/];
return [4 /*yield*/, getImageDataFromSource_1.getImageDataFromSource(imageElement)];
case 1:
dataSource = _a.sent();
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
return [2 /*return*/];
}
});
}); });
test('should throw with invalid source', function () {
getImageDataFromSource_1.getImageDataFromSource('Olalalala').catch(function (err) {
beforeAll(() => __awaiter(void 0, void 0, void 0, function* () {
const imageUrl = 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png';
const img = yield loadImage(imageUrl);
img.id = 'Code_93_wikipedia_image';
const canvas = loadCanvas(img);
canvas.id = 'Code_93_wikipedia_canvas';
document.body.appendChild(img);
document.body.appendChild(canvas);
}));
describe('Count lines in an image', () => {
test('should detect lines in barcode image', () => __awaiter(void 0, void 0, void 0, function* () {
const rowsToScan = 3;
const image = yield Jimp.read('./test/sample-images/small-padding.png');
const { data, width, height } = image.bitmap;
const channels = data.length / (width * height);
const startIndex = channels * width * Math.floor(height / 2);
const endIndex = startIndex + rowsToScan * channels * width;
const lines = getLines_1.getLines(Uint8ClampedArray.from(data.slice(startIndex, endIndex)), width, rowsToScan);
expect(lines.length).toBe(27);
}));
test('should detect lines in barcode image without padding', () => __awaiter(void 0, void 0, void 0, function* () {
const rowsToScan = 3;
const image = yield Jimp.read('./test/sample-images/small.png');
const { data, width, height } = image.bitmap;
const channels = data.length / (width * height);
const startIndex = channels * width * Math.floor(height / 2);
const endIndex = startIndex + rowsToScan * channels * width;
const lines = getLines_1.getLines(Uint8ClampedArray.from(data.slice(startIndex, endIndex)), width, rowsToScan);
expect(lines.length).toBe(27);
}));
test('should return zero lines with empty image', () => __awaiter(void 0, void 0, void 0, function* () {
const rowsToScan = 3;
const image = yield Jimp.read('./test/sample-images/empty.jpg');
const { data, width, height } = image.bitmap;
const channels = data.length / (width * height);
const startIndex = channels * width * Math.floor(height / 2);
const endIndex = startIndex + rowsToScan * channels * width;
const lines = getLines_1.getLines(Uint8ClampedArray.from(data.slice(startIndex, endIndex)), width, rowsToScan);
expect(lines.length).toBe(0);
}));
});
describe('get imageData from source', () => {
test('should get imageData from url', () => __awaiter(void 0, void 0, void 0, function* () {
const url = 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png';
const dataSource = yield getImageDataFromSource_1.getImageDataFromSource(url);
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
}));
test('should get imageData from file path', () => __awaiter(void 0, void 0, void 0, function* () {
const url = path.resolve('./test/sample-images/codabar.jpg');
const dataSource = yield getImageDataFromSource_1.getImageDataFromSource(url);
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
}));
test('should get imageData from HTMLImageElement id', () => __awaiter(void 0, void 0, void 0, function* () {
const dataSource = yield getImageDataFromSource_1.getImageDataFromSource('#Code_93_wikipedia_image');
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
}));
test('should get imageData from HTMLCanvasElement id', () => __awaiter(void 0, void 0, void 0, function* () {
const dataSource = yield getImageDataFromSource_1.getImageDataFromSource('#Code_93_wikipedia_canvas');
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
}));
test('should get imageData from HTMLImageElement', () => __awaiter(void 0, void 0, void 0, function* () {
const imageElement = document.getElementById('Code_93_wikipedia_image');
if (!imageElement || !(imageElement instanceof HTMLImageElement))
return;
const dataSource = yield getImageDataFromSource_1.getImageDataFromSource(imageElement);
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
}));
test('should get imageData from HTMLCanvasElement', () => __awaiter(void 0, void 0, void 0, function* () {
const imageElement = document.getElementById('Code_93_wikipedia_canvas');
if (!imageElement || !(imageElement instanceof HTMLCanvasElement))
return;
const dataSource = yield getImageDataFromSource_1.getImageDataFromSource(imageElement);
expect(typeof dataSource.data).toBe('object');
expect(typeof dataSource.width).toBe('number');
expect(typeof dataSource.height).toBe('number');
}));
test('should throw with invalid source', () => {
getImageDataFromSource_1.getImageDataFromSource('Olalalala').catch(err => {
expect(err).toBeDefined();

@@ -190,14 +132,14 @@ });

});
describe('Median Filter', function () {
test('Apply median filter to imageData', function () {
var width = 9;
var height = 9;
var data = new Array(width * height).fill(undefined).map(function () { return Math.random() * 255; });
var dataMedian = medianFilter_1.applyMedianFilter(Uint8ClampedArray.from(data), width, height);
describe('Median Filter', () => {
test('Apply median filter to imageData', () => {
const width = 9;
const height = 9;
const data = new Array(width * height).fill(undefined).map(() => Math.random() * 255);
const dataMedian = medianFilter_1.applyMedianFilter(Uint8ClampedArray.from(data), width, height);
expect(dataMedian.length).toBe(width * height);
});
});
describe('isUrl', function () {
test('check if string is URL', function () {
var url = 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png';
describe('isUrl', () => {
test('check if string is URL', () => {
const url = 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png';
expect(isUrl_1.isUrl(url)).toBeTruthy();

@@ -207,11 +149,5 @@ expect(isUrl_1.isUrl('#someString')).toBeFalsy();

});
describe('median', function () {
test('get median of array', function () {
expect(median_1.median([6, 3, 9])).toBe(6);
expect(median_1.median([9, 3, 6])).toBe(6);
});
});
describe('combineAllPossible', function () {
test('should be able to combine multiple results into one complete', function () {
var result = combineAllPossible_1.combineAllPossible('?123456', '012345?');
describe('combineAllPossible', () => {
test('should be able to combine multiple results into one complete', () => {
const result = combineAllPossible_1.combineAllPossible('?123456', '012345?');
expect(result).toBe('0123456');

@@ -221,395 +157,213 @@ expect(combineAllPossible_1.combineAllPossible('', '')).toBe('');

});
describe('extract barcode from local files', function () {
test('should detect barcode codabar', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/codabar.jpg'),
barcode: index_1.BARCODE_DECODERS.codabar
})];
case 1:
result = _a.sent();
expect(result).toBe('A40156C');
return [2 /*return*/];
}
describe('extract barcode from local files', () => {
test('should detect barcode codabar', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/codabar.jpg'),
barcode: index_1.BARCODE_DECODERS.codabar,
});
}); });
test('should detect barcode codabar', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/codabar.jpg'),
barcode: index_1.BARCODE_DECODERS.codabar,
options: {
singlePass: true
}
})];
case 1:
result = _a.sent();
expect(result).toBe('A40156C');
return [2 /*return*/];
}
expect(result).toBe('A40156C');
}));
test('should detect barcode codabar', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/codabar.jpg'),
barcode: index_1.BARCODE_DECODERS.codabar,
options: {
singlePass: true,
},
});
}); });
test('should detect barcode 2 of 5 standard', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-2of5.jpg'),
barcode: 'code-2of5'
})];
case 1:
result = _a.sent();
expect(result).toBe('12345670');
return [2 /*return*/];
}
expect(result).toBe('A40156C');
}));
test('should detect barcode 2 of 5 standard', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-2of5.jpg'),
barcode: 'code-2of5',
});
}); });
test('should detect barcode 2 of 5 interleaved', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-2of5-interleaved.jpg'),
barcode: 'code-2of5',
barcodeType: 'interleaved'
})];
case 1:
result = _a.sent();
expect(result).toBe('12345670');
return [2 /*return*/];
}
expect(result).toBe('12345670');
}));
test('should detect barcode 2 of 5 interleaved', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-2of5-interleaved.jpg'),
barcode: 'code-2of5',
barcodeType: 'interleaved',
});
}); });
test('should detect barcode 39', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-39.jpg'),
barcode: 'code-39'
})];
case 1:
result = _a.sent();
expect(result).toBe('10023');
return [2 /*return*/];
}
expect(result).toBe('12345670');
}));
test('should detect barcode 39', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-39.jpg'),
barcode: 'code-39',
});
}); });
test('should detect barcode 93', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-93.jpg'),
barcode: 'code-93'
})];
case 1:
result = _a.sent();
expect(result).toBe('123ABC');
return [2 /*return*/];
}
expect(result).toBe('10023');
}));
test('should detect barcode 93', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-93.jpg'),
barcode: 'code-93',
});
}); });
test('should detect barcode 128: ABC-abc-1234', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-128.jpg'),
barcode: 'code-128'
})];
case 1:
result = _a.sent();
expect(result).toBe('ABC-abc-1234');
return [2 /*return*/];
}
expect(result).toBe('123ABC');
}));
test('should detect barcode 128: ABC-abc-1234', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-128.jpg'),
barcode: 'code-128',
});
}); });
test('should detect barcode 128: eeb00f0c-0c7e-a937-1794-25685779ba0c', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-128-eeb00f0c-0c7e-a937-1794-25685779ba0c.png'),
barcode: 'code-128'
})];
case 1:
result = _a.sent();
expect(result).toBe('eeb00f0c-0c7e-a937-1794-25685779ba0c');
return [2 /*return*/];
}
expect(result).toBe('ABC-abc-1234');
}));
test('should detect barcode 128: eeb00f0c-0c7e-a937-1794-25685779ba0c', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-128-eeb00f0c-0c7e-a937-1794-25685779ba0c.png'),
barcode: 'code-128',
});
}); });
test('should detect barcode EAN-8', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/ean-8.jpg'),
barcode: 'ean-8'
})];
case 1:
result = _a.sent();
expect(result).toBe('73127727');
return [2 /*return*/];
}
expect(result).toBe('eeb00f0c-0c7e-a937-1794-25685779ba0c');
}));
test('should detect barcode 128: 3107cde3-d1ff-0f93-a215-4109753c0c9e', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-128-3107cde3-d1ff-0f93-a215-4109753c0c9e.png'),
barcode: 'code-128',
});
}); });
test('should detect barcode EAN-13 small', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/ean-13-5901234123457.png'),
barcode: 'ean-13'
})];
case 1:
result = _a.sent();
expect(result).toBe('901234123457');
return [2 /*return*/];
}
expect(result).toBe('3107cde3-d1ff-0f93-a215-4109753c0c9e');
}));
test('should detect barcode EAN-8', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/ean-8.jpg'),
barcode: 'ean-8',
options: {
useAdaptiveThreshold: true,
},
});
}); });
test('should detect barcode EAN-13 large', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/ean-13.jpg'),
barcode: 'ean-13'
})];
case 1:
result = _a.sent();
expect(result).toBe('901234123457');
return [2 /*return*/];
}
expect(result).toBe('73127727');
}));
test('should detect barcode EAN-13 small', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/ean-13-5901234123457.png'),
barcode: 'ean-13',
});
}); });
test('should detect barcode 128 without padding white bars', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-128-no-padding.jpg'),
barcode: 'code-128'
})];
case 1:
result = _a.sent();
expect(result).toBe('12ab#!');
return [2 /*return*/];
}
expect(result).toBe('901234123457');
}));
test('should detect barcode EAN-13 large', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/ean-13.jpg'),
barcode: 'ean-13',
});
}); });
test('should detect barcode 128 with multiple zeros', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-128-000.jpg'),
barcode: 'code-128'
})];
case 1:
result = _a.sent();
expect(result).toBe('79619647103200000134407005');
return [2 /*return*/];
}
expect(result).toBe('901234123457');
}));
test('should detect barcode 128 without padding white bars', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-128-no-padding.jpg'),
barcode: 'code-128',
});
}); });
test('should detect barcode 128 with default start Code B', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/L89HE1806005080432.gif'),
barcode: 'code-128'
})];
case 1:
result = _a.sent();
expect(result).toBe('L89HE1806005080432');
return [2 /*return*/];
}
expect(result).toBe('12ab#!');
}));
test('should detect barcode 128 with multiple zeros', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-128-000.jpg'),
barcode: 'code-128',
});
}); });
test('should detect barcode 93 without padding white bars', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-93-no-padding.jpg'),
barcode: 'code-93'
})];
case 1:
result = _a.sent();
expect(result).toBe('WIKIPEDIA');
return [2 /*return*/];
}
expect(result).toBe('79619647103200000134407005');
}));
test('should detect barcode 128 with default start Code B', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/L89HE1806005080432.gif'),
barcode: 'code-128',
});
}); });
test('should detect barcode 93 with bitmap data', function () { return __awaiter(void 0, void 0, void 0, function () {
var image, _a, data, width, height, result;
return __generator(this, function (_b) {
switch (_b.label) {
case 0: return [4 /*yield*/, Jimp.read('./test/sample-images/code-93-no-padding.jpg')];
case 1:
image = _b.sent();
_a = image.bitmap, data = _a.data, width = _a.width, height = _a.height;
return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: {
data: Uint8ClampedArray.from(data),
width: width,
height: height
},
barcode: 'code-93'
})];
case 2:
result = _b.sent();
expect(result).toBe('WIKIPEDIA');
return [2 /*return*/];
}
expect(result).toBe('L89HE1806005080432');
}));
test('should detect barcode 93 without padding white bars', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-93-no-padding.jpg'),
barcode: 'code-93',
});
}); });
expect(result).toBe('WIKIPEDIA');
}));
test('should detect barcode 93 with bitmap data', () => __awaiter(void 0, void 0, void 0, function* () {
const image = yield Jimp.read('./test/sample-images/code-93-no-padding.jpg');
const { data, width, height } = image.bitmap;
const result = yield index_1.javascriptBarcodeReader({
image: {
data: Uint8ClampedArray.from(data),
width,
height,
},
barcode: 'code-93',
});
expect(result).toBe('WIKIPEDIA');
}));
});
describe('extract barcode after applying adaptive threhsold', function () {
test('should detect barcode codabar', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/codabar.jpg'),
barcode: 'codabar',
options: {
useAdaptiveThreshold: true
}
})];
case 1:
result = _a.sent();
expect(result).toBe('A40156C');
return [2 /*return*/];
}
describe('extract barcode after applying adaptive threhsold', () => {
test('should detect barcode codabar', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/codabar.jpg'),
barcode: 'codabar',
options: {
useAdaptiveThreshold: true,
},
});
}); });
test('should detect barcode 2 of 5', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-2of5.jpg'),
barcode: 'code-2of5',
options: {
useAdaptiveThreshold: true
}
})];
case 1:
result = _a.sent();
expect(result).toBe('12345670');
return [2 /*return*/];
}
expect(result).toBe('A40156C');
}));
test('should detect barcode 2 of 5', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-2of5.jpg'),
barcode: 'code-2of5',
options: {
useAdaptiveThreshold: true,
},
});
}); });
test('should detect barcode 2 of 5 interleaved', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-2of5-interleaved.jpg'),
barcode: 'code-2of5',
barcodeType: 'interleaved',
options: {
useAdaptiveThreshold: true
}
})];
case 1:
result = _a.sent();
expect(result).toBe('12345670');
return [2 /*return*/];
}
expect(result).toBe('12345670');
}));
test('should detect barcode 2 of 5 interleaved', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: path.resolve('./test/sample-images/code-2of5-interleaved.jpg'),
barcode: 'code-2of5',
barcodeType: 'interleaved',
options: {
useAdaptiveThreshold: true,
},
});
}); });
expect(result).toBe('12345670');
}));
});
describe('extract barcode from remote URL', function () {
test('should detect barcode 93 from remote url', function () { return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png',
barcode: 'code-93'
})];
case 1:
result = _a.sent();
expect(result).toBe('WIKIPEDIA');
return [2 /*return*/];
}
describe('extract barcode from remote URL', () => {
test('should detect barcode 93 from remote url', () => __awaiter(void 0, void 0, void 0, function* () {
const result = yield index_1.javascriptBarcodeReader({
image: 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png',
barcode: 'code-93',
});
}); });
expect(result).toBe('WIKIPEDIA');
}));
});
describe('Fails', function () {
test('throws when no barcode specified', function () { return __awaiter(void 0, void 0, void 0, function () {
var err_1;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png',
barcode: 'oallal'
})];
case 1:
_a.sent();
return [3 /*break*/, 3];
case 2:
err_1 = _a.sent();
expect(err_1).toBeDefined();
return [3 /*break*/, 3];
case 3: return [2 /*return*/];
}
});
}); });
test('throws when invalid barcode specified', function () { return __awaiter(void 0, void 0, void 0, function () {
var err_2;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: './test/sample-images/empty.jpg',
barcode: 'none'
})];
case 1:
_a.sent();
return [3 /*break*/, 3];
case 2:
err_2 = _a.sent();
expect(err_2).toBeDefined();
return [3 /*break*/, 3];
case 3: return [2 /*return*/];
}
});
}); });
test('throws when no barcode found', function () { return __awaiter(void 0, void 0, void 0, function () {
var err_3;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
_a.trys.push([0, 2, , 3]);
return [4 /*yield*/, index_1.javascriptBarcodeReader({
image: './test/sample-images/empty.jpg',
barcode: 'code-93'
})];
case 1:
_a.sent();
return [3 /*break*/, 3];
case 2:
err_3 = _a.sent();
expect(err_3).toBeDefined();
return [3 /*break*/, 3];
case 3: return [2 /*return*/];
}
});
}); });
describe('Fails', () => {
test('throws when no barcode specified', () => __awaiter(void 0, void 0, void 0, function* () {
try {
yield index_1.javascriptBarcodeReader({
image: 'https://upload.wikimedia.org/wikipedia/en/a/a9/Code_93_wikipedia.png',
barcode: 'oallal',
});
}
catch (err) {
expect(err).toBeDefined();
}
}));
test('throws when invalid barcode specified', () => __awaiter(void 0, void 0, void 0, function* () {
try {
yield index_1.javascriptBarcodeReader({
image: './test/sample-images/empty.jpg',
barcode: 'none',
});
}
catch (err) {
expect(err).toBeDefined();
}
}));
test('throws when no barcode found', () => __awaiter(void 0, void 0, void 0, function* () {
try {
yield index_1.javascriptBarcodeReader({
image: './test/sample-images/empty.jpg',
barcode: 'code-93',
});
}
catch (err) {
expect(err).toBeDefined();
}
}));
});
//# sourceMappingURL=index.test.js.map

2

dist/types/src/index.d.ts

@@ -24,3 +24,3 @@ export declare enum BARCODE_DECODERS {

};
export declare function javascriptBarcodeReader({ image, barcode, barcodeType, options }: JavascriptBarcodeReader): Promise<string>;
export declare function javascriptBarcodeReader({ image, barcode, barcodeType, options, }: JavascriptBarcodeReader): Promise<string>;
export {};

2

dist/types/src/utilities/medianFilter.d.ts

@@ -1,1 +0,1 @@

export declare function applyMedianFilter(data: Uint8ClampedArray, width: number, height: number): Uint8ClampedArray;
export declare function applyMedianFilter(data: Uint8ClampedArray, width: number, height: number, windowSize?: number): Uint8ClampedArray;

72

package.json

@@ -18,6 +18,6 @@ {

"devDependencies": {
"@babel/core": "^7.8.4",
"@babel/core": "^7.8.6",
"@babel/plugin-proposal-class-properties": "^7.8.3",
"@babel/plugin-proposal-object-rest-spread": "^7.8.3",
"@babel/preset-env": "^7.8.4",
"@babel/preset-env": "^7.8.6",
"@commitlint/cli": "^8.3.5",

@@ -30,13 +30,10 @@ "@commitlint/config-conventional": "^8.3.4",

"@types/jest": "^25.1.3",
"@types/lodash.camelcase": "^4.3.6",
"@types/node": "^13.7.6",
"@types/node": "^13.7.7",
"@types/nodemon": "^1.19.0",
"@types/prettier": "^1.19.0",
"@types/rimraf": "^2.0.3",
"@types/rollup-plugin-json": "^3.0.2",
"@types/semantic-release": "^15.13.1",
"@types/shelljs": "^0.8.6",
"@typescript-eslint/eslint-plugin": "^2.21.0",
"@typescript-eslint/parser": "^2.21.0",
"canvas": "^2.6.1",
"colors": "^1.4.0",
"commitizen": "^4.0.3",

@@ -55,8 +52,5 @@ "coveralls": "^3.0.9",

"lint-staged": "^10.0.8",
"lodash.camelcase": "^4.3.0",
"nodemon": "^2.0.2",
"prettier": "^1.19.1",
"prompt": "^1.0.0",
"replace-in-file": "^5.0.2",
"rimraf": "^3.0.2",
"rollup": "^1.31.1",
"rollup": "^1.32.0",
"rollup-plugin-json": "^4.0.0",

@@ -67,7 +61,6 @@ "rollup-plugin-node-resolve": "^5.2.0",

"semantic-release": "^17.0.4",
"shelljs": "^0.8.3",
"ts-jest": "^25.2.1",
"ts-node": "^8.6.2",
"typedoc": "^0.16.10",
"typescript": "^3.8.2"
"typedoc": "^0.16.11",
"typescript": "^3.8.3"
},

@@ -78,45 +71,6 @@ "engines": {

"files": [
"src",
"dist"
],
"homepage": "https://github.com/mubaidr/Javascript-Barcode-Reader#readme",
"jest": {
"collectCoverageFrom": [
"src/**/*.{js,ts}"
],
"coveragePathIgnorePatterns": [
"/node_modules/",
"/test/",
"/dist/",
"/docs/",
"/tools/"
],
"coverageThreshold": {
"global": {
"branches": 80,
"functions": 100,
"lines": 90,
"statements": 90
}
},
"moduleFileExtensions": [
"ts",
"tsx",
"js"
],
"testEnvironment": "jsdom",
"testEnvironmentOptions": {
"resources": "usable"
},
"testPathIgnorePatterns": [
"/node_modules/",
"/src/",
"/dist/",
"/docs/",
"/tools/"
],
"testRegex": "(/__tests__/.*|\\.(test|spec))\\.(ts|tsx|js)$",
"transform": {
".(ts|tsx)": "ts-jest"
}
},
"keywords": [

@@ -139,6 +93,2 @@ "barcode",

"name": "javascript-barcode-reader",
"prettier": {
"semi": false,
"singleQuote": true
},
"repository": {

@@ -152,3 +102,3 @@ "type": "git",

"deploy-docs": "ts-node tools/gh-pages-publish",
"lint": "eslint --ext .js,.ts {src,test}/* --fix && prettier --write \"{test,src}/**/*.{js,ts}\"",
"lint": "eslint --ext .js,.ts {src,test}/* --fix && prettier --write \"{test,src,tools}/**/*.{js,ts}\"",
"prebuild": "rimraf dist",

@@ -165,3 +115,3 @@ "precommit": "lint-staged",

"typings": "dist/types/javascript-barcode-reader.d.ts",
"version": "0.6.2"
"version": "0.6.3"
}
dist/lib/src/utilities/median.js
dist/lib/src/utilities/median.js.map
dist/lib/src/utilities/threshold/adaptiveThreshold.js
dist/lib/src/utilities/threshold/adaptiveThreshold.js.map
dist/lib/src/utilities/threshold/applySimpleThreshold.js
dist/lib/src/utilities/threshold/applySimpleThreshold.js.map
dist/types/src/utilities/median.d.ts
dist/types/src/utilities/threshold/adaptiveThreshold.d.ts
dist/types/src/utilities/threshold/applySimpleThreshold.d.ts
dist/javascript-barcode-reader.es5.js.map

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dist/javascript-barcode-reader.umd.js.map

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dist/lib/src/codabar/index.js.map

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dist/lib/src/code-128/index.js.map

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dist/lib/src/code-39/index.js.map

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dist/lib/src/code-93/index.js.map

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dist/lib/src/code2of5/index.js.map

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dist/lib/src/ean-13/index.js.map

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dist/lib/src/ean-8/index.js.map

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dist/lib/src/index.js.map

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dist/lib/src/utilities/combineAllPossible.js.map

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dist/lib/src/utilities/getLines.js.map

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dist/lib/test/index.test.js.map

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dist/lib/tsconfig.tsbuildinfo

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