How to use the @pixi/constants.BLEND_MODES.NONE function in @pixi/constants

this.stateId = 0;

        /**
         * Polygon offset
         * @member {number}
         * @readonly
         */
        this.polygonOffset = 0;

        /**
         * Blend mode
         * @member {number}
         * @default PIXI.BLEND_MODES.NONE
         * @readonly
         */
        this.blendMode = BLEND_MODES.NONE;

        /**
         * Whether current blend equation is different
         * @member {boolean}
         * @protected
         */
        this._blendEq = false;

        /**
         * Collection of calls
         * @member {function[]}
         * @readonly
         */
        this.map = [];

        // map functions for when we set state..

array[BLEND_MODES.MULTIPLY] = [gl.DST_COLOR, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.SCREEN] = [gl.ONE, gl.ONE_MINUS_SRC_COLOR, gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.OVERLAY] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.DARKEN] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.LIGHTEN] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.COLOR_DODGE] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.COLOR_BURN] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.HARD_LIGHT] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.SOFT_LIGHT] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.DIFFERENCE] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.EXCLUSION] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.HUE] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.SATURATION] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.COLOR] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.LUMINOSITY] = [gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.NONE] = [0, 0];

    // not-premultiplied blend modes
    array[BLEND_MODES.NORMAL_NPM] = [gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.ADD_NPM] = [gl.SRC_ALPHA, gl.ONE, gl.ONE, gl.ONE];
    array[BLEND_MODES.SCREEN_NPM] = [gl.SRC_ALPHA, gl.ONE_MINUS_SRC_COLOR, gl.ONE, gl.ONE_MINUS_SRC_ALPHA];

    // composite operations
    array[BLEND_MODES.SRC_IN] = [gl.DST_ALPHA, gl.ZERO];
    array[BLEND_MODES.SRC_OUT] = [gl.ONE_MINUS_DST_ALPHA, gl.ZERO];
    array[BLEND_MODES.SRC_ATOP] = [gl.DST_ALPHA, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.DST_OVER] = [gl.ONE_MINUS_DST_ALPHA, gl.ONE];
    array[BLEND_MODES.DST_IN] = [gl.ZERO, gl.SRC_ALPHA];
    array[BLEND_MODES.DST_OUT] = [gl.ZERO, gl.ONE_MINUS_SRC_ALPHA];
    array[BLEND_MODES.DST_ATOP] = [gl.ONE_MINUS_DST_ALPHA, gl.SRC_ALPHA];
    array[BLEND_MODES.XOR] = [gl.ONE_MINUS_DST_ALPHA, gl.ONE_MINUS_SRC_ALPHA];

this.stateId = 0;

        /**
         * Polygon offset
         * @member {number}
         * @readonly
         */
        this.polygonOffset = 0;

        /**
         * Blend mode
         * @member {number}
         * @default PIXI.BLEND_MODES.NONE
         * @readonly
         */
        this.blendMode = BLEND_MODES.NONE;

        /**
         * Whether current blend equation is different
         * @member {boolean}
         * @protected
         */
        this._blendEq = false;

        /**
         * Collection of calls
         * @member {function[]}
         * @readonly
         */
        this.map = [];

        // map functions for when we set state..

set blendMode(value) // eslint-disable-line require-jsdoc
    {
        this.blend = (value !== BLEND_MODES.NONE);
        this._blendMode = value;
    }