feat: make UndiciErrors reliable to instanceof

lib/core/errors.js

@@ -1,49 +1,85 @@
 'use strict'
 
+const kUndiciError = Symbol.for('undici.error.UND_ERR')
 class UndiciError extends Error {
   constructor (message, options) {
     super(message, options)
     this.name = 'UndiciError'
     this.code = 'UND_ERR'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kUndiciError] === true
+  }
+
+  [kUndiciError] = true
 }
 
+const kConnectTimeoutError = Symbol.for('undici.error.UND_ERR_CONNECT_TIMEOUT')
 class ConnectTimeoutError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'ConnectTimeoutError'
     this.message = message || 'Connect Timeout Error'
     this.code = 'UND_ERR_CONNECT_TIMEOUT'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kConnectTimeoutError] === true
+  }
+
+  [kConnectTimeoutError] = true
 }
 
+const kHeadersTimeoutError = Symbol.for('undici.error.UND_ERR_HEADERS_TIMEOUT')
 class HeadersTimeoutError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'HeadersTimeoutError'
     this.message = message || 'Headers Timeout Error'
     this.code = 'UND_ERR_HEADERS_TIMEOUT'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kHeadersTimeoutError] === true
+  }
+
+  [kHeadersTimeoutError] = true
 }
 
+const kHeadersOverflowError = Symbol.for('undici.error.UND_ERR_HEADERS_OVERFLOW')
 class HeadersOverflowError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'HeadersOverflowError'
     this.message = message || 'Headers Overflow Error'
     this.code = 'UND_ERR_HEADERS_OVERFLOW'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kHeadersOverflowError] === true
+  }
+
+  [kHeadersOverflowError] = true
 }
 
+const kBodyTimeoutError = Symbol.for('undici.error.UND_ERR_BODY_TIMEOUT')
 class BodyTimeoutError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'BodyTimeoutError'
     this.message = message || 'Body Timeout Error'
     this.code = 'UND_ERR_BODY_TIMEOUT'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kBodyTimeoutError] === true
+  }
+
+  [kBodyTimeoutError] = true
 }
 
+const kResponseStatusCodeError = Symbol.for('undici.error.UND_ERR_RESPONSE_STATUS_CODE')
 class ResponseStatusCodeError extends UndiciError {
   constructor (message, statusCode, headers, body) {
     super(message)
@@ -55,88 +91,159 @@ class ResponseStatusCodeError extends UndiciError {
     this.statusCode = statusCode
     this.headers = headers
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kResponseStatusCodeError] === true
+  }
+
+  [kResponseStatusCodeError] = true
 }
 
+const kInvalidArgumentError = Symbol.for('undici.error.UND_ERR_INVALID_ARG')
 class InvalidArgumentError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'InvalidArgumentError'
     this.message = message || 'Invalid Argument Error'
     this.code = 'UND_ERR_INVALID_ARG'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kInvalidArgumentError] === true
+  }
+
+  [kInvalidArgumentError] = true
 }
 
+const kInvalidReturnValueError = Symbol.for('undici.error.UND_ERR_INVALID_RETURN_VALUE')
 class InvalidReturnValueError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'InvalidReturnValueError'
     this.message = message || 'Invalid Return Value Error'
     this.code = 'UND_ERR_INVALID_RETURN_VALUE'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kInvalidReturnValueError] === true
+  }
+
+  [kInvalidReturnValueError] = true
 }
 
+const kAbortError = Symbol.for('undici.error.UND_ERR_ABORT')
 class AbortError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'AbortError'
     this.message = message || 'The operation was aborted'
+    this.code = 'UND_ERR_ABORT'
+  }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kAbortError] === true
   }
+
+  [kAbortError] = true
 }
 
+const kRequestAbortedError = Symbol.for('undici.error.UND_ERR_ABORTED')
 class RequestAbortedError extends AbortError {
   constructor (message) {
     super(message)
     this.name = 'AbortError'
     this.message = message || 'Request aborted'
     this.code = 'UND_ERR_ABORTED'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kRequestAbortedError] === true
+  }
+
+  [kRequestAbortedError] = true
 }
 
+const kInformationalError = Symbol.for('undici.error.UND_ERR_INFO')
 class InformationalError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'InformationalError'
     this.message = message || 'Request information'
     this.code = 'UND_ERR_INFO'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kInformationalError] === true
+  }
+
+  [kInformationalError] = true
 }
 
+const kRequestContentLengthMismatchError = Symbol.for('undici.error.UND_ERR_REQ_CONTENT_LENGTH_MISMATCH')
 class RequestContentLengthMismatchError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'RequestContentLengthMismatchError'
     this.message = message || 'Request body length does not match content-length header'
     this.code = 'UND_ERR_REQ_CONTENT_LENGTH_MISMATCH'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kRequestContentLengthMismatchError] === true
+  }
+
+  [kRequestContentLengthMismatchError] = true
 }
 
+const kResponseContentLengthMismatchError = Symbol.for('undici.error.UND_ERR_RES_CONTENT_LENGTH_MISMATCH')
 class ResponseContentLengthMismatchError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'ResponseContentLengthMismatchError'
     this.message = message || 'Response body length does not match content-length header'
     this.code = 'UND_ERR_RES_CONTENT_LENGTH_MISMATCH'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kResponseContentLengthMismatchError] === true
+  }
+
+  [kResponseContentLengthMismatchError] = true
 }
 
+const kClientDestroyedError = Symbol.for('undici.error.UND_ERR_DESTROYED')
 class ClientDestroyedError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'ClientDestroyedError'
     this.message = message || 'The client is destroyed'
     this.code = 'UND_ERR_DESTROYED'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kClientDestroyedError] === true
+  }
+
+  [kClientDestroyedError] = true
 }
 
+const kClientClosedError = Symbol.for('undici.error.UND_ERR_CLOSED')
 class ClientClosedError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'ClientClosedError'
     this.message = message || 'The client is closed'
     this.code = 'UND_ERR_CLOSED'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kClientClosedError] === true
+  }
+
+  [kClientClosedError] = true
 }
 
+const kSocketError = Symbol.for('undici.error.UND_ERR_SOCKET')
 class SocketError extends UndiciError {
   constructor (message, socket) {
     super(message)
@@ -145,44 +252,79 @@ class SocketError extends UndiciError {
     this.code = 'UND_ERR_SOCKET'
     this.socket = socket
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kSocketError] === true
+  }
+
+  [kSocketError] = true
 }
 
+const kNotSupportedError = Symbol.for('undici.error.UND_ERR_NOT_SUPPORTED')
 class NotSupportedError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'NotSupportedError'
     this.message = message || 'Not supported error'
     this.code = 'UND_ERR_NOT_SUPPORTED'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kNotSupportedError] === true
+  }
+
+  [kNotSupportedError] = true
 }
 
+const kBalancedPoolMissingUpstreamError = Symbol.for('undici.error.UND_ERR_BPL_MISSING_UPSTREAM')
 class BalancedPoolMissingUpstreamError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'MissingUpstreamError'
     this.message = message || 'No upstream has been added to the BalancedPool'
     this.code = 'UND_ERR_BPL_MISSING_UPSTREAM'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kBalancedPoolMissingUpstreamError] === true
+  }
+
+  [kBalancedPoolMissingUpstreamError] = true
 }
 
+const kHTTPParserError = Symbol.for('undici.error.UND_ERR_HTTP_PARSER')
 class HTTPParserError extends Error {
   constructor (message, code, data) {
     super(message)
     this.name = 'HTTPParserError'
     this.code = code ? `HPE_${code}` : undefined
     this.data = data ? data.toString() : undefined
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kHTTPParserError] === true
+  }
+
+  [kHTTPParserError] = true
 }
 
+const kResponseExceededMaxSizeError = Symbol.for('undici.error.UND_ERR_RES_EXCEEDED_MAX_SIZE')
 class ResponseExceededMaxSizeError extends UndiciError {
   constructor (message) {
     super(message)
     this.name = 'ResponseExceededMaxSizeError'
     this.message = message || 'Response content exceeded max size'
     this.code = 'UND_ERR_RES_EXCEEDED_MAX_SIZE'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kResponseExceededMaxSizeError] === true
+  }
+
+  [kResponseExceededMaxSizeError] = true
 }
 
+const kRequestRetryError = Symbol.for('undici.error.UND_ERR_REQ_RETRY')
 class RequestRetryError extends UndiciError {
   constructor (message, code, { headers, data }) {
     super(message)
@@ -193,8 +335,15 @@ class RequestRetryError extends UndiciError {
     this.data = data
     this.headers = headers
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kRequestRetryError] === true
+  }
+
+  [kRequestRetryError] = true
 }
 
+const kResponseError = Symbol.for('undici.error.UND_ERR_RESPONSE')
 class ResponseError extends UndiciError {
   constructor (message, code, { headers, body }) {
     super(message)
@@ -205,8 +354,15 @@ class ResponseError extends UndiciError {
     this.body = body
     this.headers = headers
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kResponseError] === true
+  }
+
+  [kResponseError] = true
 }
 
+const kSecureProxyConnectionError = Symbol.for('undici.error.UND_ERR_PRX_TLS')
 class SecureProxyConnectionError extends UndiciError {
   constructor (cause, message, options = {}) {
     super(message, { cause, ...options })
@@ -215,6 +371,12 @@ class SecureProxyConnectionError extends UndiciError {
     this.code = 'UND_ERR_PRX_TLS'
     this.cause = cause
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kSecureProxyConnectionError] === true
+  }
+
+  [kSecureProxyConnectionError] = true
 }
 
 module.exports = {

lib/mock/mock-errors.js

@@ -2,6 +2,8 @@
 
 const { UndiciError } = require('../core/errors')
 
+const kMockNotMatchedError = Symbol.for('undici.error.UND_MOCK_ERR_MOCK_NOT_MATCHED')
+
 /**
  * The request does not match any registered mock dispatches.
  */
@@ -12,6 +14,12 @@ class MockNotMatchedError extends UndiciError {
     this.message = message || 'The request does not match any registered mock dispatches'
     this.code = 'UND_MOCK_ERR_MOCK_NOT_MATCHED'
   }
+
+  static [Symbol.hasInstance] (instance) {
+    return instance && instance[kMockNotMatchedError] === true
+  }
+
+  [kMockNotMatchedError] = true
 }
 
 module.exports = {