Function _measureText

src/helpers/helpers.canvas.ts:39–55

(
  ctx: CanvasRenderingContext2D,
  data: Record<string, number>,
  gc: string[],
  longest: number,
  string: string
)

 * @private
 */
export function _measureText(
  ctx: CanvasRenderingContext2D,
  data: Record<string, number>,
  gc: string[],
  longest: number,
  string: string
) {
  let textWidth = data[string];
  if (!textWidth) {
    textWidth = data[string] = ctx.measureText(string).width;
    gc.push(string);
  }
  if (textWidth > longest) {
    longest = textWidth;
  }
  return longest;
}

type Thing = string | undefined | null
type Things = (Thing | Thing[])[]