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node_modules/image-q/dist/esm/image-q.mjs
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{
"version": 3,
"sources": ["../../src/constants/index.ts", "../../src/constants/bt709.ts", "../../src/conversion/index.ts", "../../src/conversion/rgb2xyz.ts", "../../src/utils/arithmetic.ts", "../../src/conversion/rgb2hsl.ts", "../../src/conversion/xyz2lab.ts", "../../src/conversion/rgb2lab.ts", "../../src/conversion/lab2xyz.ts", "../../src/conversion/xyz2rgb.ts", "../../src/conversion/lab2rgb.ts", "../../src/distance/index.ts", "../../src/distance/distanceCalculator.ts", "../../src/distance/cie94.ts", "../../src/distance/ciede2000.ts", "../../src/distance/cmetric.ts", "../../src/distance/euclidean.ts", "../../src/distance/manhattan.ts", "../../src/distance/pngQuant.ts", "../../src/palette/index.ts", "../../src/palette/paletteQuantizer.ts", "../../src/utils/point.ts", "../../src/utils/pointContainer.ts", "../../src/utils/palette.ts", "../../src/utils/index.ts", "../../src/utils/hueStatistics.ts", "../../src/utils/progressTracker.ts", "../../src/palette/neuquant/neuquant.ts", "../../src/palette/neuquant/neuquantFloat.ts", "../../src/palette/rgbquant/colorHistogram.ts", "../../src/palette/rgbquant/rgbquant.ts", "../../src/palette/wu/wuQuant.ts", "../../src/image/index.ts", "../../src/image/imageQuantizer.ts", "../../src/image/nearestColor.ts", "../../src/image/array.ts", "../../src/image/spaceFillingCurves/hilbertCurve.ts", "../../src/image/riemersma.ts", "../../src/quality/index.ts", "../../src/quality/ssim.ts", "../../src/basicAPI.ts", "../../src/index.ts"],
"sourcesContent": ["/**\n * @preserve\n * Copyright 2015-2018 Igor Bezkrovnyi\n * All rights reserved. (MIT Licensed)\n *\n * constants.ts - part of Image Quantization Library\n */\nimport * as bt709 from './bt709';\n\nexport { bt709 };\n", "/**\n * @preserve\n * Copyright 2015-2018 Igor Bezkrovnyi\n * All rights reserved. (MIT Licensed)\n *\n * constants.ts - part of Image Quantization Library\n */\n\n/**\n * sRGB (based on ITU-R Recommendation BT.709)\n * http://en.wikipedia.org/wiki/SRGB\n */\nexport enum Y {\n RED = 0.2126,\n GREEN = 0.7152,\n BLUE = 0.0722,\n WHITE = 1,\n}\n\nexport enum x {\n RED = 0.64,\n GREEN = 0.3,\n BLUE = 0.15,\n WHITE = 0.3127,\n}\n\nexport enum y {\n RED = 0.33,\n GREEN = 0.6,\n BLUE = 0.06,\n WHITE = 0.329,\n}\n", "/**\n * @preserve\n * Copyright 2015-2018 Igor Bezkrovnyi\n * All rights reserved. (MIT Licensed)\n *\n * iq.ts - Image Quantization Library\n */\nexport { rgb2xyz } from './rgb2xyz';\nexport { rgb2hsl } from './rgb2hsl';\nexport { rgb2lab } from './rgb2lab';\nexport { lab2xyz } from './lab2xyz';\nexport { lab2rgb } from './lab2rgb';\nexport { xyz2lab } from './xyz2lab';\nexport { xyz2rgb } from './xyz2rgb';\n", "/**\n * @preserve\n * Copyright 2015-2018 Igor Bezkrovnyi\n * All rights reserved. (MIT Licensed)\n *\n * rgb2xyz.ts - part of Image Quantization Library\n */\nfunction correctGamma(n: number) {\n return n > 0.04045 ? ((n + 0.055) / 1.055) ** 2.4 : n / 12.92;\n}\n\nexport function rgb2xyz(r: number, g: number, b: number) {\n // gamma correction, see https://en.wikipedia.org/wiki/SRGB#The_reverse_transformation\n r = correctGamma(r / 255);\n g = correctGamma(g / 255);\n b = correctGamma(b / 255);\n\n // Observer. = 2\u00B0, Illuminant = D65\n return {\n x: r * 0.4124 + g * 0.3576 + b * 0.1805,\n y: r * 0.2126 + g * 0.7152 + b * 0.0722,\n z: r * 0.0193 + g * 0.1192 + b * 0.9505,\n };\n}\n", "export function degrees2radians(n: number) {\n return n * (Math.PI / 180);\n}\n\nexport function max3(a: number, b: number, c: number) {\n let m = a;\n if (m < b) m = b;\n if (m < c) m = c;\n return m;\n}\n\nexport function min3(a: number, b: number, c: number) {\n let m = a;\n if (m > b) m = b;\n if (m > c) m = c;\n return m;\n}\n\nexport function intInRange(value: number, low: number, high: number) {\n if (value > high) value = high;\n if (value < low) value = low;\n return value | 0;\n}\n\nexport function inRange0to255Rounded(n: number) {\n n = Math.round(n);\n if (n > 255) n = 255;\n else if (n < 0) n = 0;\n return n;\n}\n\nexport function inRange0to255(n: number) {\n if (n > 255) n = 255;\n else if (n < 0) n = 0;\n return n;\n}\n\nexport function stableSort<T>(\n arrayToSort: T[],\n callback: (a: T, b: T) => number,\n) {\n const type = typeof arrayToSort[0];\n let sorted: T[];\n\n if (type === 'number' || type === 'string') {\n const ord = Object.create(null);\n for (let i = 0, l = arrayToSort.length; i < l; i++) {\n const val = arrayToSort[i] as unknown as string;\n if (ord[val] || ord[val] === 0) continue;\n ord[val] = i;\n }\n\n sorted = arrayToSort.sort((a, b) => callback(a, b) || ord[a] - ord[b]);\n } else {\n const ord2 = arrayToSort.slice(0);\n sorted = arrayToSort.sort(\n (a, b) => callback(a, b) || ord2.indexOf(a) - ord2.indexOf(b),\n );\n }\n\n return sorted;\n}\n", "/**\n * @preserve\n * Copyright 2015-2018 Igor Bezkrovnyi\n * All rights reserved. (MIT Licensed)\n *\n * rgb2hsl.ts - part of Image Quantization Library\n */\nimport { min3, max3 } from '../utils/arithmetic';\n\n/**\n * Calculate HSL from RGB\n * Hue is in degrees [0..360]\n * Lightness: [0..1]\n * Saturation: [0..1]\n * http://web.archive.org/web/20060914040436/http://local.wasp.uwa.edu.au/~pbourke/colour/hsl/\n */\nexport function rgb2hsl(r: number, g: number, b: number) {\n const min = min3(r, g, b);\n const max = max3(r, g, b);\n const delta = max - min;\n const l = (min + max) / 510;\n\n let s = 0;\n if (l > 0 && l < 1) s = delta / (l < 0.5 ? max + min : 510 - max - min);\n\n let h = 0;\n if (delta > 0) {\n if (max === r) {\n h = (g - b) / delta;\n } else if (max === g) {\n h = 2 + (b - r) / delta;\n } else {\n h = 4 + (r - g) / delta;\n }\n\n h *= 60;\n if (h < 0) h += 360;\n }\n return { h, s, l };\n}\n", "/**\n * @preserve\n * Copyright 2015-2018 Igor Bezkrovnyi\n * All rights reserved. (MIT Licensed)\n *\n * xyz2lab.ts - part of Image Quantization Library\n */\nconst refX = 0.95047; // ref_X = 95.047 Observer= 2\u00B0, Illuminant= D65\nconst refY = 1.0; // ref_Y = 100.000\nconst refZ = 1.08883; // ref_Z = 108.883\n\nfunction pivot(n: number) {\n return n > 0.008856 ? n ** (1 / 3) : 7.787 * n + 16 / 116;\n}\n\nexport function xyz2lab(x: number, y: number, z: number) {\n x = pivot(x / refX);\n y = pivot(y / refY);\n z = pivot(z / refZ);\n\n if (116 * y - 16 < 0) throw new Error('xxx');\n return {\n L: Math.max(0, 116 * y - 16),\n Line truncated
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