src/index.tsx

src/index.tsx

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+import React, { createContext, useEffect, useState } from 'react';
+
+export type Liff =
+  | typeof window.liff
+  | {
+      getLineVersion: () => string;
+      permanentLink: {
+        createUrl: () => string;
+        setExtraQueryParams: (extraString: string) => void;
+      };
+    };
+export type LiffError = {
+  code: string;
+  message: string;
+};
+export type LiffContext = {
+  liff: Liff;
+  error?: LiffError;
+};
+
+const liffStub: Liff = {
+  getOS: () => 'web',
+  getLanguage: () => 'ja',
+  getVersion: () => '2.1.3',
+  getLineVersion: () => '10.8.0',
+  isInClient: () => true,
+  isLoggedIn: () => true,
+  isApiAvailable: () => true,
+  login: () => {},
+  logout: () => {},
+  getAccessToken: () => 'DummyAccessToken',
+  getIDToken: () => 'DummyIDToken',
+  getDecodedIDToken: async () => ({
+    amr: [],
+    aud: 'aud',
+    email: '[email protected]',
+    exp: 0,
+    iat: 0,
+    iss: 'iss',
+    name: 'name',
+    picture: 'picture_url',
+    sub: 'sub',
+  }),
+  getContext: () => ({ type: 'none', viewType: 'full' }),
+  getProfile: async () => ({ userId: 'userId', displayName: 'displayName' }),
+  getFriendship: async () => {
+    return { friendFlag: true };
+  },
+  permanentLink: {
+    createUrl: () => 'https://liff.line.me/liffId/path',
+    setExtraQueryParams: () => {},
+  },
+  sendMessages: async () => {},
+  openWindow: ({ url, external }) => {
+    external ? window.open(url) : (window.location.href = url);
+  },
+  shareTargetPicker: async () => {},
+  scanCode: async () => ({ value: 'DummyCode' }),
+  closeWindow: () => {
+    window.close();
+  },
+  initPlugins: async () => {},
+  bluetooth: {
+    getAvailability: async () => false,
+    requestDevice: async () => ({
+      id: 'id',
+      watchingAdvertisements: false,
+      watchAdvertisements: async () => {},
+      unwatchAdvertisements: () => {},
+      addEventListener: () => {},
+      removeEventListener: () => {},
+    }),
+  },
+};
+
+const context = createContext<LiffContext>({ liff: liffStub });
+
+export interface LiffProviderProps {
+  liffId: string;
+  stubEnabled?: boolean | Partial<Liff>;
+}
+
+export const LiffProvider: React.FC<LiffProviderProps> = ({
+  children,
+  liffId,
+  stubEnabled = false,
+}) => {
+  const [liff, setLiff] = useState<Liff>(liffStub);
+  const [error, setError] = useState<LiffError>();
+
+  useEffect(() => {
+    if (stubEnabled) {
+      if (typeof stubEnabled === 'object') {
+        setLiff({ ...liffStub, ...stubEnabled });
+      }
+      return;
+    }
+
+    window.liff
+      .init({ liffId })
+      .then(() => {
+        setLiff(window.liff);
+      })
+      .catch(e => setError(e));
+  }, [window.liff]);
+
+  return <context.Provider value={{ liff, error }}>{children}</context.Provider>;
+};
+
+export const useLiff = (): LiffContext => React.useContext(context);

tsconfig.json

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+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig.json to read more about this file */
+
+    /* Basic Options */
+    // "incremental": true,                   /* Enable incremental compilation */
+    "target": "ES2019",                       /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
+    "module": "es2015",                          /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+    // "lib": [],                             /* Specify library files to be included in the compilation. */
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    "jsx": "react",                           /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    "declaration": true,                      /* Generates corresponding '.d.ts' file. */
+    // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
+    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    "outDir": "./dist",                       /* Redirect output structure to the directory. */
+    "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "composite": true,                     /* Enable project compilation */
+    // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */
+    // "removeComments": true,                /* Do not emit comments to output. */
+    // "noEmit": true,                        /* Do not emit outputs. */
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": true,                           /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "strictBindCallApply": true,           /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+    // "strictPropertyInitialization": true,  /* Enable strict checking of property initialization in classes. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    "types": ["react", "liff-type"],          /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+    // "allowUmdGlobalAccess": true,          /* Allow accessing UMD globals from modules. */
+
+    /* Source Map Options */
+    // "sourceRoot": "",                      /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "",                         /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+
+    /* Advanced Options */
+    "skipLibCheck": true,                     /* Skip type checking of declaration files. */
+    "forceConsistentCasingInFileNames": true  /* Disallow inconsistently-cased references to the same file. */
+  },
+  "include": [
+    "src"
+  ]
+}