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interface CanvasRenderingContext2D {
undefined fillRect(double x, double y, double w, double h);
undefined strokeRect(double x, double y, double w, double h);
undefined clearRect(double x, double y, double w, double h);
undefined scale(double x, double y);
undefined translate(double x, double y);
undefined rotate(double radians);
undefined beginPath();
undefined closePath();
undefined fill(optional DOMString fillRule = "nonzero");
undefined stroke();
undefined moveTo(double x, double y);
undefined lineTo(double x, double y);
undefined quadraticCurveTo(double cpx, double cpy, double x, double y);
undefined bezierCurveTo(double cp1x, double cp1y, double cp2x, double cp2y, double x, double y);
undefined arc(double x, double y, double radius, double startAngle, double endAngle, optional boolean counterclockwise = false);
undefined ellipse(double x, double y, double radiusX, double radiusY, double rotation, double startAngle, double endAngle, optional boolean counterclockwise = false);
undefined rect(double x, double y, double width, double height);
undefined fillText(DOMString text, double x, double y, optional double maxWidth);
undefined drawImage(HTMLImageElement image, double dx, double dy);
attribute DOMString fillStyle;
attribute DOMString strokeStyle;
attribute double lineWidth;
ImageData createImageData(double sw, double sh);
undefined putImageData(ImageData imagedata, double dx, double dy);
undefined save();
undefined restore();
undefined reset();
boolean isContextLost();
readonly attribute HTMLCanvasElement canvas;
TextMetrics measureText(DOMString text);
};
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