How to use the svg-pathdata.SVGPathData function in svg-pathdata

static load(svgNode) {
    let inputPaths = svgNode.querySelectorAll('path'),
        currentPath = {},
        paths = [];

    currentPath.points = []

    // Scrape all points from all points, and record breakpoints
    for(let inputPath of inputPaths) {
      let pathData = new SVGPathData(inputPath.getAttribute('d'));

      let previousCoords = {
        x: 0,
        y: 0
      };

      for(let [index, command] of pathData.commands.entries()) {
        switch(command.type) {
          // Move ('M') and line ('L') commands have both X and Y
          case SVGPathData.MOVE_TO:
          case SVGPathData.LINE_TO:
            currentPath.points.push([
              command.x, 
              command.y
            ]);

this.glyphs.forEach(glyph => {
      const ratio = this._options.normalize
        ? fontHeight / glyph.height
        : fontHeight / maxGlyphHeight;
      if (!isFinite(ratio)) throw new Error('foo');
      glyph.width *= ratio;
      glyph.height *= ratio;
      const glyphPath = new SVGPathData('');

      if (this._options.fixedWidth) {
        glyph.width = fontWidth;
      }
      const yOffset = glyph.height - this._options.descent;
      const glyphPathTransform = new Matrix().transform(
        1,
        0,
        0,
        -1,
        0,
        yOffset
      ); // ySymmetry
      if (1 !== ratio) {
        glyphPathTransform.scale(ratio, ratio);
      }

function applyTransform(d) {
      return new SVGPathData(d).matrix(
        ...transformStack[transformStack.length - 1].toArray()
      );
    }
    const glyph = svgIconStream.metadata || {};