yarnIsFlat() function

Uses yarn.lock to detect if multiple versions of a dependency have been installed.

Signature:

export declare function yarnIsFlat(p?: string, log?: LogOption): boolean;

Parameters

Parameter	Type	Description
p	string	(Optional) Directory of `yarn.lock`.
log	LogOption	(Optional) If true, progress and errors will be logged. Has no affect on exceptions thrown.

**Returns:**

boolean