API signatures

This file will be removed.

(global)

require(mod)

Require a module.
```
var http = require('http');
```
sleep(t)

Sleep for t seconds. Decimals are allowed; sleep(0.5) sleeps for half a second.

This may be moved somewhere else later on.

vu

Provides information about the currently executing VU.

vu.id()

Returns the VU's numeric ID.

http

http.do(method, url[, data[, params]])

Sends an HTTP Request.

For GET requests, data is an object that's turned into query parameters. For any other kind, strings are sent verbatim, null and undefined omit the request body, and objects and arrays are JSON encoded.

Params:
- quiet - bool Do not report statistical information about this request.
- headers - object Headers to set on the request. Values will be turned into strings if they're not already.
Returns: HTTPResponse object.
- status - integer HTTP status code.
- body - string Response body. Always a string, empty if there's no body.
- headers - object Response headers. May be empty if there are none, but it's always an object.
- json() Decodes the response body into JSON.
http.get(...) - Alias for http.do('GET', ...)
http.post(...) - Alias for http.do('POST', ...)
http.put(...) - Alias for http.do('PUT', ...)
http.delete(...) - Alias for http.do('DELETE', ...)
http.patch(...) - Alias for http.do('PATCH', ...)
http.options(...) - Alias for http.do('OPTIONS', ...)

log

log.type(type, msg[, extra])

Writes out a log message.

Type is one of debug, info, warn and error; messages to unknown channels will be ignored. Note that debug messages are only displayed when running k6 with -v (--verbose).

Extra is an object of extra data to be provided along with the message. It's considered good practice to have the message a fixed string, and use extra data to provide context information, rather than concatenating it with the message.
```
var log = require('log');
// Don't do this
log.error("Something happened: " + error);
// Do this instead
log.error("Something happened", { error: error });
```