Added type declarations

types/locations.d.ts

@@ -0,0 +1,41 @@
+import Spine from "./spine";
+import Section from "./section";
+import EpubCFI from "./epubcfi";
+
+export default class Locations {
+  constructor(spine: Spine, request?: Function, pause?: number);
+
+  generate(chars: number): object;
+
+  process(section: Section): Promise<Array<string>>;
+
+	locationFromCfi(cfi: string | EpubCFI): Location;
+
+	percentageFromCfi(cfi: string | EpubCFI): number;
+
+  percentageFromLocation(loc: number): number;
+
+  cfiFromLocation(loc: number): string;
+
+  cfiFromPercentage(percentage: number): string;
+
+	load(locations: JSON): Array<string>;
+
+  save(): JSON;
+
+  currentLocation(): Location;
+  currentLocation(curr: string | number): void;
+
+  length(): number;
+
+  destroy(): void;
+
+  private createRange(): {
+    startContainer: Element,
+    startOffset: number,
+    endContainer: Element,
+    endOffset: number
+  };
+
+  private parse(contents: Node, cfiBase: string, chars: number) : Array<string>;
+}