Constructs a MissingBindingError.
The binding name that could not be resolved.
ReadonlybindingThe binding name that could not be resolved.
ReadonlycapabilityOptionalstackStaticstackThe Error.stackTraceLimit property specifies the number of stack frames
collected by a stack trace (whether generated by new Error().stack or
Error.captureStackTrace(obj)).
The default value is 10 but may be set to any valid JavaScript number. Changes
will affect any stack trace captured after the value has been changed.
If set to a non-number value, or set to a negative number, stack traces will not capture any frames.
StaticcaptureCreates a .stack property on targetObject, which when accessed returns
a string representing the location in the code at which
Error.captureStackTrace() was called.
const myObject = {};
Error.captureStackTrace(myObject);
myObject.stack; // Similar to `new Error().stack`
The first line of the trace will be prefixed with
${myObject.name}: ${myObject.message}.
The optional constructorOpt argument accepts a function. If given, all frames
above constructorOpt, including constructorOpt, will be omitted from the
generated stack trace.
The constructorOpt argument is useful for hiding implementation
details of error generation from the user. For instance:
function a() {
b();
}
function b() {
c();
}
function c() {
// Create an error without stack trace to avoid calculating the stack trace twice.
const { stackTraceLimit } = Error;
Error.stackTraceLimit = 0;
const error = new Error();
Error.stackTraceLimit = stackTraceLimit;
// Capture the stack trace above function b
Error.captureStackTrace(error, b); // Neither function c, nor b is included in the stack trace
throw error;
}
a();
OptionalconstructorOpt: FunctionStaticprepare
Error thrown when a binding is requested but not present on the environment.
Bindings are resolved at request time, so a missing binding means the Worker was deployed without it declared in
wrangler.json— this error names the binding so the misconfiguration is obvious in the logs.Remarks
Extends
MissingCapabilityError, so a caller that wants to handle "something this deployment needs is absent" without caring which platform said so can catch the base. The message stays Cloudflare-specific because that is the one an operator has to act on.Author
Bayu Dwiyan Satria
Version
1.0.0
Since
1.0.0