feat: add TypeScript definition (#190)

Adds `@types/glob` to `optionalDependencies`.

lib/index.d.ts

@@ -0,0 +1,66 @@
+import { IOptions as GlobOptions } from 'glob';
+import { Stats } from 'fs';
+
+export type CreateOptions = {
+  dot?: boolean;
+  globOptions?: GlobOptions;
+  ordering?: string;
+  pattern?: string;
+  transform?: (filePath: string) => string;
+  unpack?: string;
+  unpackDir?: string;
+};
+
+export type ListOptions = {
+  isPack: boolean;
+};
+
+export type EntryMetadata = {
+  unpacked: boolean;
+};
+
+export type DirectoryMetadata = EntryMetadata & {
+  files: { [property: string]: EntryMetadata };
+};
+
+export type FileMetadata = EntryMetadata & {
+  executable?: true;
+  offset?: number;
+  size?: number;
+};
+
+export type LinkMetadata = {
+  link: string;
+};
+
+export type Metadata = DirectoryMetadata | FileMetadata | LinkMetadata;
+
+export type InputMetadataType = 'directory' | 'file' | 'link';
+
+export type InputMetadata = {
+  [property: string]: {
+    type: InputMetadataType;
+    stat: Stats;
+  }
+};
+
+export function createPackage(src: string, dest: string): Promise<void>;
+export function createPackageWithOptions(
+  src: string,
+  dest: string,
+  options: CreateOptions
+): Promise<void>;
+export function createPackageFromFiles(
+  src: string,
+  dest: string,
+  filenames: string[],
+  metadata?: InputMetadata,
+  options?: CreateOptions
+): Promise<void>;
+
+export function statFile(archive: string, filename: string, followLinks?: boolean): Metadata;
+export function listPackage(archive: string, options?: ListOptions): string[];
+export function extractFile(archive: string, filename: string): Buffer;
+export function extractAll(archive: string, dest: string): void;
+export function uncache(archive: string): boolean;
+export function uncacheAll(): void;