Project llm-mock-server

Type Aliases§

FormatName: The LLM API wire format that was detected for a request.
LogLevel: Log verbosity, from "none" (silent) through to "all" (everything).
Match: Determines whether a rule matches an incoming request.
Reply: A reply is either a plain string (turns into { text: "..." }) or a full reply object.
Resolver: A reply value or a function that produces one. Async functions are supported.
SequenceEntry: A single entry in a reply sequence. Can be a plain reply or a reply with per-step options.

MockServer: Mock LLM server that handles OpenAI Chat Completions, Anthropic Messages, and OpenAI Responses API formats. Register rules with when(), point your SDK at url, and go.
RequestHistory: Records every request the server handles. Iterable and has fluent query methods for test assertions.

ErrorReply: An HTTP error response. The server returns this status code with a format-appropriate body.
Handler: The shape of a handler file's default export. You can export a single handler or an array of them.
MatchObject: A structured matcher. Every field you set must match for the rule to fire.
Message: A single conversation message, normalised across all supported formats.
MockRequest: A normalised view of an incoming request, regardless of the original wire format. This is what rule matchers and resolvers receive.
MockServerOptions: Options for constructing a MockServer or calling createMock().
PendingRule: Returned by when(). Call .reply() or .replySequence() on it to complete the rule.
RecordedRequest: A recorded request with the rule that matched and when it happened.
ReplyObject: A structured reply. Text, reasoning, tool calls, usage, and errors are all optional.
ReplyOptions: Per-rule streaming options. Merged with server-level defaults, with per-rule values winning.
RuleHandle: A handle to a registered rule. All methods return this for chaining.
RuleSummary: A summary of a registered rule, for inspection via server.rules.
ToolCall: A tool call in the mock response.
ToolDef: A tool definition from the request's tools array, normalised across formats.