Method parse

src/parsetree/commands/basic.js:792–827

(parser)

    }

    static parse(parser) {
        if (!parser.matchToken("scroll")) return;

        // scroll to ... form
        if (parser.matchToken("to")) {
            var scroll = _parseScrollModifiers(parser);
            return new ScrollCommand(scroll.target, scroll.offset, scroll.plusOrMinus, scroll.scrollOptions, scroll.container);
        }

        // scroll [<target>] [up|down|left|right] by <amount>px [smoothly|instantly]
        var direction = parser.matchAnyToken("up", "down", "left", "right");
        var target;

        if (!direction && parser.currentToken().value !== "by") {
            target = parser.requireElement("unaryExpression");
            direction = parser.matchAnyToken("up", "down", "left", "right");
        }

        parser.requireToken("by");

        parser.pushFollow("px");
        var offset;
        try {
            offset = parser.requireElement("expression");
        } finally {
            parser.popFollow();
        }
        parser.matchToken("px");

        var behavior = _parseSmoothness(parser);
        var scrollOptions = {};
        if (behavior) scrollOptions.behavior = behavior;

        var byMode = { direction: direction ? direction.value : "down" };
        return new ScrollCommand(target, offset, null, scrollOptions, null, byMode);
    }

    resolve(ctx, { target, offset, container }) {
        if (this.byMode) {