First commit.

Signed-off-by: Chen Xiao <abigwc@gmail.com>

client/node_modules/mermaid/dist/rendering-util/labelTransform.d.ts

@@ -0,0 +1,26 @@
+/**
+ * Bounding box used for label transform computation.
+ * For SVG getBBox(), x/y may be present; for HTML getBoundingClientRect(), only width/height are used.
+ */
+export interface LabelBBox {
+    x?: number;
+    y?: number;
+    width: number;
+    height: number;
+}
+/**
+ * Compute the SVG translate transform needed to center a label element at the origin.
+ *
+ * For HTML labels, getBoundingClientRect() is used and its x/y are viewport-absolute,
+ * so only width/height are relevant for centering within the SVG group.
+ *
+ * For SVG labels, getBBox() returns coordinates in the element's local coordinate system.
+ * When addSvgBackground is true, the background <rect> extends beyond the text (making
+ * bbox.x/y negative), so we include those offsets to correctly center the visual
+ * content at the origin.
+ *
+ * @param bbox - The bounding box of the label element
+ * @param useHtmlLabels - Whether HTML labels are in use
+ * @returns SVG transform string, e.g. "translate(-20, -10)"
+ */
+export declare const computeLabelTransform: (bbox: LabelBBox, useHtmlLabels: boolean) => string;