feat: add back flow types (#1289)

index.js.flow

@@ -0,0 +1,98 @@
+// @flow
+import * as React from 'react';
+import { typeof View } from 'react-native';
+
+export type ConfigureParams = $ReadOnly<{|
+  iosClientId?: string,
+  googleServicePlistPath?: string,
+  offlineAccess?: boolean,
+  webClientId?: string,
+  scopes?: string[],
+  hostedDomain?: string,
+  forceCodeForRefreshToken?: boolean,
+  accountName?: string,
+  openIdRealm?: string,
+  profileImageSize?: number,
+|}>;
+
+export type SignInParams = $ReadOnly<{|
+  loginHint?: string,
+|}>;
+
+export type AddScopesParams = $ReadOnly<{|
+  /**
+   * The Google API scopes to request access to. Default is email and profile.
+   */
+  scopes?: string[],
+|}>;
+
+export type GoogleSigninButtonProps = $ReadOnly<{|
+  ...React.ElementConfig<View>,
+  size?: number,
+  color?: string,
+  disabled?: boolean,
+  onPress?: () => any,
+|}>;
+
+declare export class GoogleSigninButton extends React.Component<GoogleSigninButtonProps> {
+  static Size: {
+    Icon: number,
+    Standard: number,
+    Wide: number,
+  };
+
+  static Color: {
+    Auto: string,
+    Light: string,
+    Dark: string,
+  };
+}
+
+export type HasPlayServicesParams = $ReadOnly<{|
+  showPlayServicesUpdateDialog: boolean,
+|}>;
+
+export type User = {|
+  user: {|
+    id: string,
+    name: ?string, // full name
+    email: string,
+    photo: ?string, // url
+    familyName: ?string,
+    givenName: ?string,
+  |},
+  scopes: string[], // on iOS this is empty array if no additional scopes are defined
+  idToken: string,
+  /**
+   * Not null only if a valid webClientId and offlineAccess: true was
+   * specified in configure().
+   */
+  serverAuthCode: ?string,
+|};
+
+// Android Status codes: https://developers.google.com/android/reference/com/google/android/gms/auth/api/signin/GoogleSignInStatusCodes
+type StatusCodes = $ReadOnly<{
+  SIGN_IN_CANCELLED: string,
+  IN_PROGRESS: string,
+  PLAY_SERVICES_NOT_AVAILABLE: string,
+  SIGN_IN_REQUIRED: string,
+}>;
+
+declare export var statusCodes: StatusCodes;
+
+// the functions are not static in fact, but the module exports a
+// singleton instance of the class; not the class itself
+// using static keyword works well for this case
+declare export class GoogleSignin {
+  static hasPlayServices: (params?: HasPlayServicesParams) => Promise<boolean>;
+  static configure: (params?: ConfigureParams) => void;
+  static signInSilently: () => Promise<User>;
+  static signIn: (params?: SignInParams) => Promise<User>;
+  static addScopes: (params: AddScopesParams) => Promise<User | null>;
+  static signOut: () => Promise<null>;
+  static revokeAccess: () => Promise<null>;
+  static hasPreviousSignIn: () => boolean;
+  static getCurrentUser(): User | null;
+  static clearCachedAccessToken(token: string): Promise<null>;
+  static getTokens(): Promise<{ idToken: string, accessToken: string }>;
+}