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index.js
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index.js
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"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
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 fs = require('fs');
var quantize = require('quantize');
var getPixels = require("get-pixels");
function ndFlatten(img) {
var fullArr = [];
for (var i = 0; i < img.shape[0]; ++i) {
for (var j = 0; j < img.shape[1]; ++j) {
var t = [];
for (var k = 0; k < 3; ++k) {
t.push(img.get(i, j, k));
}
fullArr.push(t);
}
}
return fullArr;
}
var ColorThief = /** @class */ (function () {
function ColorThief() {
this.sourceImageData = null;
this.type = null;
}
ColorThief.prototype._getPixels = function (imgBuffer) {
var _this = this;
return new Promise(function (resolve, reject) {
getPixels(imgBuffer, _this.type, function (err, pixels) {
if (err) {
resolve(null);
}
resolve(pixels);
});
});
};
ColorThief.prototype.loadImage = function (image, type) {
if (type === void 0) { type = null; }
return __awaiter(this, void 0, void 0, function () {
var _a, ext, _b;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
this.type = type;
if (!Buffer.isBuffer(image)) return [3 /*break*/, 2];
if (!this.type || !['image/png', 'image/jpeg', 'image/jpg'].includes(this.type)) {
throw new Error('type must be image/png or image/jpeg or image/jpg');
}
_a = this;
return [4 /*yield*/, this._getPixels(image)];
case 1:
_a.sourceImageData = _c.sent();
return [2 /*return*/, this.sourceImageData];
case 2:
ext = image.split('.').pop();
if (!ext || !['png', 'jpg', 'jpeg'].includes(ext)) {
throw new Error('extension must be png, jpg or jpeg');
}
this.type = "image/" + ext;
_b = this;
return [4 /*yield*/, this._getPixels(fs.readFileSync(image))];
case 3:
_b.sourceImageData = _c.sent();
return [2 /*return*/, this.sourceImageData];
}
});
});
};
;
ColorThief.prototype.getColorPalette = function (colorCount) {
if (!this.sourceImageData) {
throw new Error('No image loaded');
}
var q = quantize(ndFlatten(this.sourceImageData), Math.max(2, colorCount));
return q.palette();
};
ColorThief.prototype.getColor = function () {
if (!this.sourceImageData) {
throw new Error('No image loaded');
}
var palette = quantize(ndFlatten(this.sourceImageData), 2);
return palette.palette()[0];
};
return ColorThief;
}());
exports.default = ColorThief;