Add react-router-dom

This commit adds a npm and flow-typed dependency, with no functional
change.

Test plan: `yarn travis` passes.

flow-typed/npm/react-router-dom_v4.x.x.js

@@ -0,0 +1,160 @@
+// flow-typed signature: cf916fca23433d4bbcb7a75f2604407d
+// flow-typed version: f821d89401/react-router-dom_v4.x.x/flow_>=v0.53.x
+
+declare module "react-router-dom" {
+  declare export class BrowserRouter extends React$Component<{
+    basename?: string,
+    forceRefresh?: boolean,
+    getUserConfirmation?: GetUserConfirmation,
+    keyLength?: number,
+    children?: React$Node
+  }> {}
+
+  declare export class HashRouter extends React$Component<{
+    basename?: string,
+    getUserConfirmation?: GetUserConfirmation,
+    hashType?: "slash" | "noslash" | "hashbang",
+    children?: React$Node
+  }> {}
+
+  declare export class Link extends React$Component<{
+    className?: string,
+    to: string | LocationShape,
+    replace?: boolean,
+    children?: React$Node
+  }> {}
+
+  declare export class NavLink extends React$Component<{
+    to: string | LocationShape,
+    activeClassName?: string,
+    className?: string,
+    activeStyle?: Object,
+    style?: Object,
+    isActive?: (match: Match, location: Location) => boolean,
+    children?: React$Node,
+    exact?: boolean,
+    strict?: boolean
+  }> {}
+
+  // NOTE: Below are duplicated from react-router. If updating these, please
+  // update the react-router and react-router-native types as well.
+  declare export type Location = {
+    pathname: string,
+    search: string,
+    hash: string,
+    state?: any,
+    key?: string
+  };
+
+  declare export type LocationShape = {
+    pathname?: string,
+    search?: string,
+    hash?: string,
+    state?: any
+  };
+
+  declare export type HistoryAction = "PUSH" | "REPLACE" | "POP";
+
+  declare export type RouterHistory = {
+    length: number,
+    location: Location,
+    action: HistoryAction,
+    listen(
+      callback: (location: Location, action: HistoryAction) => void
+    ): () => void,
+    push(path: string | LocationShape, state?: any): void,
+    replace(path: string | LocationShape, state?: any): void,
+    go(n: number): void,
+    goBack(): void,
+    goForward(): void,
+    canGo?: (n: number) => boolean,
+    block(
+      callback: (location: Location, action: HistoryAction) => boolean
+    ): void,
+    // createMemoryHistory
+    index?: number,
+    entries?: Array<Location>
+  };
+
+  declare export type Match = {
+    params: { [key: string]: ?string },
+    isExact: boolean,
+    path: string,
+    url: string
+  };
+
+  declare export type ContextRouter = {|
+    history: RouterHistory,
+    location: Location,
+    match: Match,
+    staticContext?: StaticRouterContext,
+|};
+
+  declare export type GetUserConfirmation = (
+    message: string,
+    callback: (confirmed: boolean) => void
+  ) => void;
+
+  declare type StaticRouterContext = {
+    url?: string
+  };
+
+  declare export class StaticRouter extends React$Component<{
+    basename?: string,
+    location?: string | Location,
+    context: StaticRouterContext,
+    children?: React$Node
+  }> {}
+
+  declare export class MemoryRouter extends React$Component<{
+    initialEntries?: Array<LocationShape | string>,
+    initialIndex?: number,
+    getUserConfirmation?: GetUserConfirmation,
+    keyLength?: number,
+    children?: React$Node
+  }> {}
+
+  declare export class Router extends React$Component<{
+    history: RouterHistory,
+    children?: React$Node
+  }> {}
+
+  declare export class Prompt extends React$Component<{
+    message: string | ((location: Location) => string | boolean),
+    when?: boolean
+  }> {}
+
+  declare export class Redirect extends React$Component<{
+    to: string | LocationShape,
+    push?: boolean
+  }> {}
+
+  declare export class Route extends React$Component<{
+    component?: React$ComponentType<*>,
+    render?: (router: ContextRouter) => React$Node,
+    children?: React$ComponentType<ContextRouter> | React$Node,
+    path?: string,
+    exact?: boolean,
+    strict?: boolean
+  }> {}
+
+  declare export class Switch extends React$Component<{
+    children?: React$Node
+  }> {}
+
+  declare export function withRouter<P>(
+    Component: React$ComponentType<{| ...ContextRouter, ...P |}>
+  ): React$ComponentType<P>;
+
+  declare type MatchPathOptions = {
+    path?: string,
+    exact?: boolean,
+    sensitive?: boolean,
+    strict?: boolean
+  };
+
+  declare export function matchPath(
+    pathname: string,
+    options?: MatchPathOptions | string
+  ): null | Match;
+}

package.json

@@ -50,6 +50,7 @@
     "react": "^16.2.0",
     "react-dev-utils": "^5.0.0",
     "react-dom": "^16.2.0",
+    "react-router-dom": "^4.2.2",
     "style-loader": "0.19.0",
     "sw-precache-webpack-plugin": "0.11.4",
     "url-loader": "0.6.2",

yarn.lock

@@ -3259,6 +3259,16 @@ he@1.1.x:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
 
+history@^4.7.2:
+  version "4.7.2"
+  resolved "https://registry.yarnpkg.com/history/-/history-4.7.2.tgz#22b5c7f31633c5b8021c7f4a8a954ac139ee8d5b"
+  dependencies:
+    invariant "^2.2.1"
+    loose-envify "^1.2.0"
+    resolve-pathname "^2.2.0"
+    value-equal "^0.4.0"
+    warning "^3.0.0"
+
 hmac-drbg@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
@@ -3275,6 +3285,10 @@ hoek@4.x.x:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/hoek/-/hoek-4.2.0.tgz#72d9d0754f7fe25ca2d01ad8f8f9a9449a89526d"
 
+hoist-non-react-statics@^2.3.0:
+  version "2.5.0"
+  resolved "https://registry.yarnpkg.com/hoist-non-react-statics/-/hoist-non-react-statics-2.5.0.tgz#d2ca2dfc19c5a91c5a6615ce8e564ef0347e2a40"
+
 home-or-tmp@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/home-or-tmp/-/home-or-tmp-2.0.0.tgz#e36c3f2d2cae7d746a857e38d18d5f32a7882db8"
@@ -3534,6 +3548,12 @@ interpret@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/interpret/-/interpret-1.1.0.tgz#7ed1b1410c6a0e0f78cf95d3b8440c63f78b8614"
 
+invariant@^2.2.1:
+  version "2.2.4"
+  resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.4.tgz#610f3c92c9359ce1db616e538008d23ff35158e6"
+  dependencies:
+    loose-envify "^1.0.0"
+
 invariant@^2.2.2:
   version "2.2.2"
   resolved "https://registry.yarnpkg.com/invariant/-/invariant-2.2.2.tgz#9e1f56ac0acdb6bf303306f338be3b204ae60360"
@@ -4500,7 +4520,7 @@ longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
 
-loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
+loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.2.0, loose-envify@^1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.1.tgz#d1a8ad33fa9ce0e713d65fdd0ac8b748d478c848"
   dependencies:
@@ -5202,7 +5222,7 @@ path-to-regexp@0.1.7:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
 
-path-to-regexp@^1.0.1:
+path-to-regexp@^1.0.1, path-to-regexp@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.7.0.tgz#59fde0f435badacba103a84e9d3bc64e96b9937d"
   dependencies:
@@ -5643,6 +5663,14 @@ prop-types@^15.5.10, prop-types@^15.6.0:
     loose-envify "^1.3.1"
     object-assign "^4.1.1"
 
+prop-types@^15.5.4:
+  version "15.6.1"
+  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.1.tgz#36644453564255ddda391191fb3a125cbdf654ca"
+  dependencies:
+    fbjs "^0.8.16"
+    loose-envify "^1.3.1"
+    object-assign "^4.1.1"
+
 proxy-addr@~2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.2.tgz#6571504f47bb988ec8180253f85dd7e14952bdec"
@@ -5822,6 +5850,29 @@ react-reconciler@^0.7.0:
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
+react-router-dom@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/react-router-dom/-/react-router-dom-4.2.2.tgz#c8a81df3adc58bba8a76782e946cbd4eae649b8d"
+  dependencies:
+    history "^4.7.2"
+    invariant "^2.2.2"
+    loose-envify "^1.3.1"
+    prop-types "^15.5.4"
+    react-router "^4.2.0"
+    warning "^3.0.0"
+
+react-router@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/react-router/-/react-router-4.2.0.tgz#61f7b3e3770daeb24062dae3eedef1b054155986"
+  dependencies:
+    history "^4.7.2"
+    hoist-non-react-statics "^2.3.0"
+    invariant "^2.2.2"
+    loose-envify "^1.3.1"
+    path-to-regexp "^1.7.0"
+    prop-types "^15.5.4"
+    warning "^3.0.0"
+
 react-test-renderer@^16.0.0-0:
   version "16.2.0"
   resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.2.0.tgz#bddf259a6b8fcd8555f012afc8eacc238872a211"
@@ -6121,6 +6172,10 @@ resolve-from@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-3.0.0.tgz#b22c7af7d9d6881bc8b6e653335eebcb0a188748"
 
+resolve-pathname@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/resolve-pathname/-/resolve-pathname-2.2.0.tgz#7e9ae21ed815fd63ab189adeee64dc831eefa879"
+
 resolve@1.1.7:
   version "1.1.7"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"
@@ -7037,6 +7092,10 @@ validate-npm-package-license@^3.0.1:
     spdx-correct "~1.0.0"
     spdx-expression-parse "~1.0.0"
 
+value-equal@^0.4.0:
+  version "0.4.0"
+  resolved "https://registry.yarnpkg.com/value-equal/-/value-equal-0.4.0.tgz#c5bdd2f54ee093c04839d71ce2e4758a6890abc7"
+
 vary@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"
@@ -7065,6 +7124,12 @@ walker@~1.0.5:
   dependencies:
     makeerror "1.0.x"
 
+warning@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/warning/-/warning-3.0.0.tgz#32e5377cb572de4ab04753bdf8821c01ed605b7c"
+  dependencies:
+    loose-envify "^1.0.0"
+
 watch@~0.10.0:
   version "0.10.0"
   resolved "https://registry.yarnpkg.com/watch/-/watch-0.10.0.tgz#77798b2da0f9910d595f1ace5b0c2258521f21dc"