For-each-break NPM

for-each-break

Small utility library implementing forEach, map, filter, forEachRight, mapRight and filterRight functions with break and return emulation as if it was a regular for or while loop.

To simulate break return BREAK or RETURN, to simulate return return BREAK(value) or RETURN(value) both are equivalent but the one communicating the right intent should be used.

The functions assume this is an array like object so they should be invoked with .call(arrayLike, callback)

defines:

BREAK - used to break or return from loop, using BREAK to break out of loop is preferred since it communicates clear intention
RETURN - used to break or return from loop, using RETURN to break out of loop and return a value is preferred since it communicates clear intention
filter - use to filter array like object, with early break or return: filter.call(arrayLike, callback, thisArg)
forEach - use to loop over array like object: forEach.call(arrayLike, callback, thisArg, defaultReturn)
map - use to map array like object, with early break or return: map.call(arrayLike, callback, thisArg)
filterRight - use to filter array like object in reverse, with early break or return: filter.call(arrayLike, callback, thisArg)
forEachRight - use to loop over array like object in reverse: forEach.call(arrayLike, callback, thisArg, defaultReturn)
mapRight - use to map array like object in reverse, with early break or return: map.call(arrayLike, callback, thisArg)