Creates a new transform chain.
#appendTransform(transform)
Appends a transform to the end of the chain.
Appends a transform to the end of the chain.
Transform or TransformDefinition transform
:
the transform to append.
#hasMatch(filename)
Check if the chain has a matching transform for a particular file.
#notifyPostLoadHooks(filename)
Notify every transform that a file has been loaded. Included for legacy istanbul support.
Notify every transform that a file has been loaded. Included for legacy istanbul support.
string filename
:
Passed to every transforms postLoadHook (regardless of whether the transform matches the loaded file).
#prependTransform(transform)
Prepends a transform at the beginning of the chain.
Prepends a transform at the beginning of the chain.
Transform or TransformDefinition transform
:
the transform to prepend.
#transform(code, filename)
Transform an input using the matching transforms from the chain.
Transform an input using the matching transforms from the chain.
The object to be transformed using the chain. Usually this will always be a string, but it is not required. Whatever type it is. All transforms in the chain must support it.
string filename
:
Any
:
The transformed results. Again, this is almost always going to be a string.
A callback that performs a transform
string or Any code
:
The input to be transformed.
string filename
:
The name of the file being transformed.
Function next
:
Execute the rest of the transform synchronously
Function next.hasNext
Check if any of the transforms remaining in the chain can handle the file. You can optionally pass a string to change the name of the file.
Create a new transform.
Object or transformCallback opts
:
[transformCallback] opts.transform
(default noop)
The transform function.
[Function or string or Array<string> or RegExp] opts.match
Used to filter whether or not this transform is applied to a given file.
[Array<string>] opts.extensions
(default '.js')
List of file extensions this transform applies to.
[boolean] opts.verbose
(default false)
If true, every invocation of the transform will be logged.
[string] opts.name
The name of this transform, used in logging and error reporting.
TransformA new transform instance
#matches(filename)
Check whether this transform should be applied to a given file. transformCallback
Check whether this transform should be applied to a given file. transformCallback
string filename
:
The name of the file
booleantrue if this transform should be applied to the file.