Method diff

src/data/SeriesData.ts:1143–1156

* Create a data differ

(otherList: SeriesData)

     * Create a data differ
     */
    diff(otherList: SeriesData): DataDiffer {
        const thisList = this;

        return new DataDiffer(
            otherList ? otherList.getStore().getIndices() : [],
            this.getStore().getIndices(),
            function (idx: number) {
                return getId(otherList, idx);
            },
            function (idx: number) {
                return getId(thisList, idx);
            }
        );
    }

    /**
     * Get visual property.