Preciser text width measure (single line, obviously needs transpiling for the browser detection to work)

WidthMeasure.js

    /**
     * @see {@link https://developer.mozilla.org/en-US/docs/Web/API/TextMetrics}
     * @summary measure text width
     * @param {CanvasRenderingContext2D} ctx drawing context
     * @returns {number}
     */
    const measureWidth = (ctx, text) => {

        const measurement = ctx.measureText(text);
        
        if (!("actualBoundingBoxLeft" in measurement)) /* IE, use width */ {
            return measurement.width;
        }

        const { actualBoundingBoxLeft, actualBoundingBoxRight } = measurement;
        return Math.abs(actualBoundingBoxLeft) + Math.abs(actualBoundingBoxRight);
    };