moved rrweb-snapshot into packages/rrweb-snapshot

packages/rrweb-snapshot/test.d.ts

@@ -0,0 +1,21 @@
+declare module 'rollup-plugin-typescript' {
+  function typescript(): any;
+  export = typescript;
+}
+
+declare module 'jest-snapshot' {
+  export class SnapshotState {
+    constructor(testFile: string, options: any);
+
+    save(): any;
+  }
+  type matchResult = {
+    pass: boolean;
+    report(): string;
+  };
+  export function toMatchSnapshot(
+    received: any,
+    propertyMatchers?: any,
+    testName?: string,
+  ): matchResult;
+}