Select Scale Keyframes

// Cavalry Script: Keyfast - Select scale keyframes

(function selectScaleKeyframes() {
    var SCALE_ATTRS = ["scale", "scale.x", "scale.y", "scale.z", "shapeScale"]; // common variants

    var isScaleAttr = function(attrPath) {
        if (!attrPath || typeof attrPath !== "string") return false;
        var a = ("" + attrPath).toLowerCase();
        if (a === "scale") return true;
        if (a.indexOf("scale.") === 0) return true;
        if (a.indexOf(".scale") !== -1) return true;
        if (a.indexOf("shapescale") !== -1) return true;
        return false;
    };

    var uniq = function(arr) { var m = {}; var out = []; for (var i=0;i<arr.length;i++){ var v=arr[i]; if(!m[v]){ m[v]=true; out.push(v);} } return out; };

    var listScaleAttributes = function(layerId) {
        var attrs = [];
        try { var animated = (typeof api.getAnimatedAttributes === "function") ? (api.getAnimatedAttributes(layerId) || []) : []; for (var i=0;i<animated.length;i++) if (isScaleAttr(animated[i])) attrs.push(animated[i]); } catch (_) {}
        for (var j=0;j<SCALE_ATTRS.length;j++) if (attrs.indexOf(SCALE_ATTRS[j]) === -1) attrs.push(SCALE_ATTRS[j]);
        return attrs;
    };

    var getScaleKeyIdsForLayer = function(layerId) {
        var ids = [];
        var scAttrs = listScaleAttributes(layerId);
        for (var i=0;i<scAttrs.length;i++) {
            var attr = scAttrs[i];
            try {
                var kIds = (typeof api.getKeyframeIdsForAttribute === "function") ? (api.getKeyframeIdsForAttribute(layerId, attr) || []) : [];
                for (var k=0;k<kIds.length;k++) ids.push(kIds[k]);
            } catch (_) {}
        }
        return ids;
    };

    var selectedKeyIds = [];