fix: no GET on mutations (#663)

package.json

@@ -91,6 +91,7 @@
     "happy-dom": "^13.3.1",
     "json-bigint": "^1.0.0",
     "prettier": "^3.2.4",
+    "tsx": "^4.7.0",
     "type-fest": "^4.10.1",
     "typescript": "^5.3.3",
     "vitest": "^1.2.1",

src/classes/GraphQLClient.ts

@@ -2,7 +2,7 @@ import type { BatchRequestDocument, BatchRequestsOptions, BatchResult } from '..
 import { parseBatchRequestArgs } from '../functions/batchRequests.js'
 import { parseRawRequestArgs } from '../functions/rawRequest.js'
 import { parseRequestArgs } from '../functions/request.js'
-import { resolveRequestDocument } from '../helpers/resolveRequestDocument.js'
+import { analyzeDocument } from '../helpers/analyzeDocument.js'
 import { runRequest } from '../helpers/runRequest.js'
 import type { RequestDocument, RequestOptions, VariablesAndRequestHeadersArgs } from '../helpers/types.js'
 import {
@@ -45,14 +45,13 @@ export class GraphQLClient {
       fetchOptions.signal = rawRequestOptions.signal
     }
 
-    const { operationName } = resolveRequestDocument(rawRequestOptions.query, excludeOperationName)
+    const document = analyzeDocument(rawRequestOptions.query, excludeOperationName)
 
     const response = await runRequest({
       url,
       request: {
         _tag: `Single`,
-        operationName,
-        query: rawRequestOptions.query,
+        document,
         variables: rawRequestOptions.variables,
       },
       headers: {
@@ -105,14 +104,13 @@ export class GraphQLClient {
       fetchOptions.signal = requestOptions.signal
     }
 
-    const { query, operationName } = resolveRequestDocument(requestOptions.document, excludeOperationName)
+    const analyzedDocument = analyzeDocument(requestOptions.document, excludeOperationName)
 
     const response = await runRequest({
       url,
       request: {
-        operationName,
         _tag: `Single`,
-        query,
+        document: analyzedDocument,
         variables: requestOptions.variables,
       },
       headers: {
@@ -152,17 +150,20 @@ export class GraphQLClient {
       fetchOptions.signal = batchRequestOptions.signal
     }
 
-    const queries = batchRequestOptions.documents.map(
-      ({ document }) => resolveRequestDocument(document, excludeOperationName).query
+    const analyzedDocuments = batchRequestOptions.documents.map(
+      ({ document }) => analyzeDocument(document, excludeOperationName)
     )
+    const expressions = analyzedDocuments.map(({ expression }) => expression)
+    const hasMutations = analyzedDocuments.some(({ isMutation }) => isMutation)
     const variables = batchRequestOptions.documents.map(({ variables }) => variables)
 
     const response= await runRequest({
       url: this.url,
       request: {
         _tag:`Batch`,
         operationName: undefined,
-        query: queries,
+        query: expressions,
+        hasMutations,
         variables,
       },
       headers: {

src/entrypoints/main.ts

@@ -12,7 +12,7 @@ export { GraphQLClient } from '../classes/GraphQLClient.js'
 export { batchRequests } from '../functions/batchRequests.js'
 export { gql } from '../functions/gql.js'
 export { rawRequest } from '../functions/rawRequest.js'
-export { resolveRequestDocument } from '../helpers/resolveRequestDocument.js'
+export { analyzeDocument } from '../helpers/analyzeDocument.js'
 export { GraphQLWebSocketClient } from '../lib/graphql-ws.js'
 export {
   BatchRequestDocument,

src/helpers/analyzeDocument.ts

@@ -0,0 +1,63 @@
+import { isOperationDefinitionNode } from '../lib/graphql.js'
+import { tryCatch } from '../lib/prelude.js'
+import type { RequestDocument } from './types.js'
+/**
+ * Refactored imports from `graphql` to be more specific, this helps import only the required files (100KiB)
+ * instead of the entire package (greater than 500KiB) where tree-shaking is not supported.
+ * @see https://github.com/jasonkuhrt/graphql-request/pull/543
+ */
+import { type DocumentNode, OperationTypeNode } from 'graphql/language/ast.js'
+import { parse } from 'graphql/language/parser.js'
+import { print } from 'graphql/language/printer.js'
+
+/**
+ * helpers
+ */
+
+const extractOperationName = (document: DocumentNode): string | undefined => {
+  let operationName = undefined
+
+  const defs = document.definitions.filter(isOperationDefinitionNode)
+
+  if (defs.length === 1) {
+    operationName = defs[0]!.name?.value
+  }
+
+  return operationName
+}
+
+const extractIsMutation = (document: DocumentNode): boolean => {
+  let isMutation = false
+
+  const defs = document.definitions.filter(isOperationDefinitionNode)
+
+  if (defs.length === 1) {
+    isMutation = defs[0]!.operation === OperationTypeNode.MUTATION
+  }
+
+  return isMutation
+}
+
+export const analyzeDocument = (
+  document: RequestDocument,
+  excludeOperationName?: boolean,
+): { expression: string; operationName: string | undefined; isMutation: boolean } => {
+  const expression = typeof document === `string` ? document : print(document)
+
+  let isMutation = false
+  let operationName = undefined
+
+  if (excludeOperationName) {
+    return { expression, isMutation, operationName }
+  }
+
+  const docNode = tryCatch(() => (typeof document === `string` ? parse(document) : document))
+  if (docNode instanceof Error) {
+    return { expression, isMutation, operationName }
+  }
+
+  operationName = extractOperationName(docNode)
+  isMutation = extractIsMutation(docNode)
+
+  return { expression, operationName, isMutation }
+}