fix(client): add Accept: application/json header to all generated fetch requests

examples/generated-rq/1password-connect/client.ts

@@ -61,6 +61,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated-rq/adyen-checkout/client.ts

@@ -114,6 +114,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedBasic

examples/generated-rq/adyen-legal-entity/client.ts

@@ -99,6 +99,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedBasic

examples/generated-rq/canada_holidays/client.ts

@@ -58,6 +58,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
     },

examples/generated-rq/devto/client.ts

@@ -82,6 +82,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedApiKey ? { 'api-key': resolvedApiKey } : {}),

examples/generated-rq/exchangerate/client.ts

@@ -58,6 +58,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
     },

examples/generated-rq/open-meteo/client.ts

@@ -58,6 +58,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
     },

examples/generated-rq/openai/client.ts

@@ -272,6 +272,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated-rq/petstore-3.0/client.ts

@@ -64,6 +64,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated-rq/redocly-museum/client.ts

@@ -68,6 +68,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedBasic

examples/generated-rq/resend/client.ts

@@ -167,6 +167,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated-rq/spotify/client.ts

@@ -60,6 +60,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated-rq/twitter/client.ts

@@ -150,6 +150,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated/1password-connect/client.ts

@@ -70,6 +70,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated/adyen-checkout/client.ts

@@ -165,6 +165,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedBasic

examples/generated/adyen-legal-entity/client.ts

@@ -134,6 +134,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedBasic

examples/generated/canada_holidays/client.ts

@@ -58,6 +58,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
     },

examples/generated/devto/client.ts

@@ -105,6 +105,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedApiKey ? { 'api-key': resolvedApiKey } : {}),

examples/generated/exchangerate/client.ts

@@ -58,6 +58,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
     },

examples/generated/open-meteo/client.ts

@@ -58,6 +58,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
     },

examples/generated/openai/client.ts

@@ -272,6 +272,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated/petstore-3.0/client.ts

@@ -66,6 +66,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated/redocly-museum/client.ts

@@ -76,6 +76,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedBasic

examples/generated/resend/client.ts

@@ -273,6 +273,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated/spotify/client.ts

@@ -60,6 +60,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

examples/generated/twitter/client.ts

@@ -240,6 +240,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      Accept: 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
       ...(resolvedToken ? { Authorization: `Bearer ${resolvedToken}` } : {}),

packages/openapi-zod-ts/src/__tests__/__snapshots__/client.test.ts.snap

@@ -52,6 +52,7 @@ async function _request(
   let _init: RequestInit = {
     method,
     headers: {
+      'Accept': 'application/json',
       ...(opts.body !== undefined ? { 'Content-Type': 'application/json' } : {}),
       ...headers,
     },

packages/openapi-zod-ts/src/plugins/client.ts

@@ -1037,6 +1037,11 @@ function emitContentTypeHeader(lines: string[], hasFormUrlencoded: boolean): voi
   }
 }
 
+/** Emits the Accept: application/json header as the first entry in the headers block. */
+function emitAcceptHeader(lines: string[]): void {
+  lines.push(`      'Accept': 'application/json',`)
+}
+
 /** Emits the body field in the fetch options for JSON or form-urlencoded body. */
 function emitBodyField(lines: string[], hasFormUrlencoded: boolean): void {
   if (hasFormUrlencoded) {
@@ -1101,6 +1106,7 @@ function emitRequestFunction(
   lines.push(`    method,`)
   if (features.hasCookieAuth) lines.push(`    credentials,`)
   lines.push(`    headers: {`)
+  emitAcceptHeader(lines)
   emitContentTypeHeader(lines, features.hasFormUrlencoded)
   lines.push(`      ...headers,`)
   emitAuthHeaderSpreads(lines, hasToken, hasBasic, auth.apiKeyHeaderNames)
@@ -1142,6 +1148,7 @@ function emitRequestFormFunction(
   lines.push(`    method,`)
   if (features.hasCookieAuth) lines.push(`    credentials,`)
   lines.push(`    headers: {`)
+  emitAcceptHeader(lines)
   lines.push(`      ...headers,`)
   emitAuthHeaderSpreads(lines, hasToken, hasBasic, auth.apiKeyHeaderNames)
   if (features.hasHeaderParams) lines.push(`      ...opts.extraHeaders,`)