@azure/functions

property direction

direction: 'in' | 'out' | 'inout' | undefined;

• The direction of your binding, as defined in function.json.

property name

name: string;

• The name of your binding, as defined in function.json.

property type

type: string;

• The type of your binding, as defined in function.json.

property bindingData

bindingData: ContextBindingData;

• Trigger metadata and function invocation data.

property bindingDefinitions

bindingDefinitions: BindingDefinition[];

• Bindings your function uses, as defined in function.json.

property bindings

bindings: ContextBindings;

• Input and trigger binding data, as defined in function.json. Properties on this object are dynamically generated and named based off of the "name" property in function.json.

property executionContext

executionContext: ExecutionContext;

• Function execution metadata.

property invocationId

invocationId: string;

• A unique GUID per function invocation.

property log

log: Logger;

• Allows you to write streaming function logs. Calling directly allows you to write streaming function logs at the default trace level.

property req

req?: HttpRequest;

• HTTP request object. Provided to your function when using HTTP Bindings.

property res

res?: {
    [key: string]: any;
};

• HTTP response object. Provided to your function when using HTTP Bindings.

property traceContext

traceContext: TraceContext;

• TraceContext information to enable distributed tracing scenarios.

method done

done: (err?: Error | string | null, result?: any) => void;

• A callback function that signals to the runtime that your code has completed. If your function is synchronous, you must call context.done at the end of execution. If your function is asynchronous, you should not use this callback.

  Parameter err

  A user-defined error to pass back to the runtime. If present, your function execution will fail.

  Parameter result

  An object containing output binding data. result will be passed to JSON.stringify unless it is a string, Buffer, ArrayBufferView, or number.

  Deprecated

  Use of sync functions with context.done() is not recommended. Use async/await and pass the response as the return value instead. See the docs here for more information: https://aka.ms/functions-js-async-await

property invocationId

invocationId: string;

• A unique GUID per function invocation.

index signature

[name: string]: any;

index signature

[name: string]: any;

property domain

domain?: string;

• Specifies allowed hosts to receive the cookie

property expires

expires?: Date | number;

• NOTE: It is generally recommended that you use maxAge over expires. Sets the cookie to expire at a specific date instead of when the client closes. This can be a Javascript Date or Unix time in milliseconds.

property httpOnly

httpOnly?: boolean;

• Sets the cookie to be inaccessible to JavaScript's Document.cookie API

property maxAge

maxAge?: number;

• Number of seconds until the cookie expires. A zero or negative number will expire the cookie immediately.

property name

name: string;

• Cookie name

property path

path?: string;

• Specifies URL path that must exist in the requested URL

property sameSite

sameSite?: 'Strict' | 'Lax' | 'None' | undefined;

• Can restrict the cookie to not be sent with cross-site requests

property secure

secure?: boolean;

• Sets the cookie to only be sent with an encrypted request

property value

value: string;

• Cookie value

property message

message?: string | null;

• Exception message

property source

source?: string | null;

• Exception source

property stackTrace

stackTrace?: string | null;

• Exception stackTrace

property functionDirectory

functionDirectory: string;

• The directory your function is in (this is the parent directory of this function's function.json).

property functionName

functionName: string;

• The name of the function that is being invoked. The name of your function is always the same as the name of the corresponding function.json's parent directory.

property invocationId

invocationId: string;

• A unique GUID per function invocation.

property retryContext

retryContext: RetryContext | null;

• The retry context of the current function execution or null if the retry policy is not defined.

property length

length: number;

• The number of parts in this form

method get

get: (name: string) => FormPart | null;

• Returns the value of the first name-value pair whose name is name. If there are no such pairs, null is returned.

method getAll

getAll: (name: string) => FormPart[];

• Returns the values of all name-value pairs whose name is name. If there are no such pairs, an empty array is returned.

method has

has: (name: string) => boolean;

• Returns true if there is at least one name-value pair whose name is name.

property contentType

contentType?: string;

• The content type for this part of the form, assumed to be "text/plain" if not specified

property fileName

fileName?: string;

• The file name for this part of the form, if specified

property value

value: Buffer;

• The value for this part of the form

property body

body?: any;

• The HTTP request body.

property headers

headers: HttpRequestHeaders;

• HTTP request headers.

property method

method: HttpMethod | null;

• HTTP request method used to invoke this function.

property params

params: HttpRequestParams;

• Route parameter keys and values.

property query

query: HttpRequestQuery;

• Query string parameter keys and values from the URL.

property rawBody

rawBody?: any;

• The HTTP request body as a UTF-8 string.

property url

url: string;

• Request URL.

property user

user: HttpRequestUser | null;

• Object representing logged-in user, either through AppService/Functions authentication, or SWA Authentication null when no such user is logged in.

method parseFormBody

parseFormBody: () => Form;

• Parses the body and returns an object representing a form

  Throws

  if the content type is not "multipart/form-data" or "application/x-www-form-urlencoded"

index signature

[name: string]: string;

index signature

[name: string]: string;

index signature

[name: string]: string;

property claimsPrincipalData

claimsPrincipalData: {
    [key: string]: any;
};

• Extra authentication information, dependent on auth type and auth provider

property id

id: string;

• unique user GUID

property identityProvider

identityProvider: string;

• provider of authentication service

property type

type: HttpRequestUserType;

• Type of authentication, either AppService or StaticWebApps

property username

username: string;

• unique username

property body

body?: any;

• HTTP response body.

property cookies

cookies?: Cookie[];

• HTTP response cookies.

property enableContentNegotiation

enableContentNegotiation?: boolean;

• Enable content negotiation of response body if true If false, treat response body as raw false

property headers

headers?: HttpResponseHeaders;

• HTTP response headers.

property status

status: (statusCode: number | string) => HttpResponseFull;

• Sets the HTTP response status code

  Returns

  the updated HttpResponseFull instance

property statusCode

statusCode?: number | string;

• HTTP response status code. 200

method end

end: (body?: any) => HttpResponseFull;

• Same as send() Automatically sets the content-type then calls context.done()

  Returns

  updated HttpResponseFull instance

  Deprecated

  this method calls context.done() which is deprecated, use async/await and pass the response as your function's return value instead. See the docs here for more information: https://aka.ms/functions-js-async-await

method get

get: (field: string) => any;

• Has the same functionality as getHeader Get the value of a particular header field

method getHeader

getHeader: (field: string) => any;

• Get the value of a particular header field

method header

header: (field: string, val: any) => HttpResponseFull;

• Has the same functionality as setHeader. Sets a particular header field to a value

  Returns

  the updated HttpResponseFull instance

method json

json: (body?: any) => void;

• Sets the 'Content-Type' header to 'application/json' then calls send(body)

  Deprecated

  this method calls context.done() which is deprecated, use async/await and pass the response as your function's return value instead. See the docs here for more information: https://aka.ms/functions-js-async-await

method removeHeader

removeHeader: (field: string) => HttpResponseFull;

• Removes a particular header field

  Returns

  the updated HttpResponseFull instance

method send

send: (body?: any) => HttpResponseFull;

• Automatically sets the content-type then calls context.done()

  Returns

  updated HttpResponseFull instance

  Deprecated

  this method calls context.done() which is deprecated, use async/await and pass the response as the return value instead. See the docs here for more information: https://aka.ms/functions-js-async-await

method sendStatus

sendStatus: (statusCode: string | number) => HttpResponseFull;

• Sets the status code then calls send()

  Returns

  updated HttpResponseFull instance

  Deprecated

  this method calls context.done() which is deprecated, use async/await and pass the response as your function's return value instead. See the docs here for more information: https://aka.ms/functions-js-async-await

method set

set: (field: string, val: any) => HttpResponseFull;

• Has the same functionality as setHeader. Sets a particular header field to a value

  Returns

  the updated HttpResponseFull instance

method setHeader

setHeader: (field: string, val: any) => HttpResponseFull;

• Sets a particular header field to a value

  Returns

  the updated HttpResponseFull instance

method type

type: (type: string) => HttpResponseFull;

• Set the 'Content-Type' header to a particular value

  Returns

  the updated HttpResponseFull instance

index signature

[name: string]: string;

property body

body?: any;

• HTTP response body.

property cookies

cookies?: Cookie[];

• HTTP response cookies.

property enableContentNegotiation

enableContentNegotiation?: boolean;

• Enable content negotiation of response body if true If false, treat response body as raw false

property headers

headers?: HttpResponseHeaders;

• HTTP response headers.

property status

status?: number | string;

• HTTP response status code The same as statusCode. This property is ignored if statusCode is set 200

property statusCode

statusCode?: number | string;

• HTTP response status code. This property takes precedence over the status property 200

method error

error: (...args: any[]) => void;

• Writes to error level logging or lower.

method info

info: (...args: any[]) => void;

• Writes to info level logging or lower.

method verbose

verbose: (...args: any[]) => void;

• Writes to verbose level logging.

method warn

warn: (...args: any[]) => void;

• Writes to warning level logging or lower.

call signature

(...args: any[]): void;

• Writes streaming function logs at the default trace level.

property exception

exception?: Exception;

• Exception that caused the retry

property maxRetryCount

maxRetryCount: number;

• Max retry count is the maximum number of times an execution is retried before eventual failure. A value of -1 means to retry indefinitely.

property retryCount

retryCount: number;

• Current retry count of the function executions.

property isPastDue

isPastDue: boolean;

• Whether this timer invocation is due to a missed schedule occurrence.

property schedule

schedule: {
    /**
     * Whether intervals between invocations should account for DST.
     */
    adjustForDST: boolean;
};

property scheduleStatus

scheduleStatus: {
    /**
     * The last recorded schedule occurrence. Date ISO string.
     */
    last: string;
    /**
     * The expected next schedule occurrence. Date ISO string.
     */
    next: string;
    /**
     * The last time this record was updated. This is used to re-calculate `next` with the current schedule after a host restart. Date ISO string.
     */
    lastUpdated: string;
};

property attributes

attributes:
    | {
          [k: string]: string;
      }
    | null
    | undefined;

• Holds additional properties being sent as part of request telemetry.

property traceparent

traceparent: string | null | undefined;

• Describes the position of the incoming request in its trace graph in a portable, fixed-length format.

property tracestate

tracestate: string | null | undefined;

• Extends traceparent with vendor-specific data.