Add support for GET requests

Fixes jasonkuhrt#61

package.json

@@ -39,6 +39,7 @@
     "typescript": "2.7.2"
   },
   "dependencies": {
-    "cross-fetch": "2.0.0"
+    "cross-fetch": "2.0.0",
+    "universal-url": "^1.0.0"
   }
 }

src/index.ts

@@ -1,6 +1,9 @@
 import { ClientError, GraphQLError, Headers, Options, Variables } from './types'
 export { ClientError } from './types'
 import 'cross-fetch/polyfill'
+import { shim } from 'universal-url'
+
+shim()
 
 export class GraphQLClient {
   private url: string
@@ -15,19 +18,7 @@ export class GraphQLClient {
     query: string,
     variables?: Variables,
   ): Promise<{ data?: T, extensions?: any, errors?: GraphQLError[] }> {
-    const { headers, ...others } = this.options
-
-    const body = JSON.stringify({
-      query,
-      variables: variables ? variables : undefined,
-    })
-
-    const response = await fetch(this.url, {
-      method: 'POST',
-      headers: Object.assign({ 'Content-Type': 'application/json' }, headers),
-      body,
-      ...others,
-    })
+    const response = await this.getResponse(query, variables)
 
     const result = await getResult(response)
 
@@ -47,19 +38,7 @@ export class GraphQLClient {
     query: string,
     variables?: Variables,
   ): Promise<T> {
-    const { headers, ...others } = this.options
-
-    const body = JSON.stringify({
-      query,
-      variables: variables ? variables : undefined,
-    })
-
-    const response = await fetch(this.url, {
-      method: 'POST',
-      headers: Object.assign({ 'Content-Type': 'application/json' }, headers),
-      body,
-      ...others,
-    })
+    const response = await this.getResponse(query, variables)
 
     const result = await getResult(response)
 
@@ -91,6 +70,38 @@ export class GraphQLClient {
     }
     return this
   }
+
+  async getResponse(
+    query: string,
+    variables?: Variables,
+  ) {
+    const { headers, method = 'POST', ...others } = this.options
+    let response: Response
+
+    if (method.toLowerCase() === 'get') {
+      const url = new URL(this.url)
+      url.searchParams.append('query', JSON.stringify(query))
+      if (variables) {
+        url.searchParams.append('variables', JSON.stringify(variables))
+      }
+
+      response = await fetch(url.toString(), { headers })
+    } else {
+      const body = JSON.stringify({
+        query,
+        variables,
+      })
+
+      response = await fetch(this.url, {
+        headers: Object.assign({ 'Content-Type': 'application/json' }, headers),
+        body,
+        ...others,
+        method: 'POST',
+      })
+    }
+
+    return response
+  }
 }
 
 export async function rawRequest<T extends any>(

yarn.lock

@@ -1421,6 +1421,10 @@ has-yarn@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-yarn/-/has-yarn-1.0.0.tgz#89e25db604b725c8f5976fff0addc921b828a5a7"
 
+hasurl@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/hasurl/-/hasurl-1.0.0.tgz#e4c619097ae1e8fc906bee904ce47e94f5e1ea37"
+
 hawk@~3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/hawk/-/hawk-3.1.3.tgz#078444bd7c1640b0fe540d2c9b73d59678e8e1c4"
@@ -1853,6 +1857,10 @@ lodash.merge@^4.6.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/lodash.merge/-/lodash.merge-4.6.0.tgz#69884ba144ac33fe699737a6086deffadd0f89c5"
 
+lodash.sortby@^4.7.0:
+  version "4.7.0"
+  resolved "https://registry.yarnpkg.com/lodash.sortby/-/lodash.sortby-4.7.0.tgz#edd14c824e2cc9c1e0b0a1b42bb5210516a42438"
+
 lodash@^4.17.4, lodash@^4.2.0:
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
@@ -2307,6 +2315,10 @@ punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
 
+punycode@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.0.tgz#5f863edc89b96db09074bad7947bf09056ca4e7d"
+
 qs@~6.4.0:
   version "6.4.0"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.4.0.tgz#13e26d28ad6b0ffaa91312cd3bf708ed351e7233"
@@ -2826,6 +2838,12 @@ tough-cookie@~2.3.0:
   dependencies:
     punycode "^1.4.1"
 
+tr46@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-1.0.1.tgz#a8b13fd6bfd2489519674ccde55ba3693b706d09"
+  dependencies:
+    punycode "^2.1.0"
+
 trim-newlines@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/trim-newlines/-/trim-newlines-1.0.0.tgz#5887966bb582a4503a41eb524f7d35011815a613"
@@ -2923,6 +2941,13 @@ unique-temp-dir@^1.0.0:
     os-tmpdir "^1.0.1"
     uid2 "0.0.3"
 
+universal-url@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/universal-url/-/universal-url-1.0.0.tgz#3375a3f9166f38984e089d12ede58006f088a3d1"
+  dependencies:
+    hasurl "^1.0.0"
+    whatwg-url "^6.0.1"
+
 unzip-response@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/unzip-response/-/unzip-response-2.0.1.tgz#d2f0f737d16b0615e72a6935ed04214572d56f97"
@@ -2968,6 +2993,10 @@ verror@1.3.6:
   dependencies:
     extsprintf "1.0.2"
 
+webidl-conversions@^4.0.1:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
+
 well-known-symbols@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/well-known-symbols/-/well-known-symbols-1.0.0.tgz#73c78ae81a7726a8fa598e2880801c8b16225518"
@@ -2976,6 +3005,14 @@ whatwg-fetch@2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.3.tgz#9c84ec2dcf68187ff00bc64e1274b442176e1c84"
 
+whatwg-url@^6.0.1:
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-6.4.0.tgz#08fdf2b9e872783a7a1f6216260a1d66cc722e08"
+  dependencies:
+    lodash.sortby "^4.7.0"
+    tr46 "^1.0.0"
+    webidl-conversions "^4.0.1"
+
 which@^1.2.9:
   version "1.2.14"
   resolved "https://registry.yarnpkg.com/which/-/which-1.2.14.tgz#9a87c4378f03e827cecaf1acdf56c736c01c14e5"