Have assertString.js provide the invalid type passed to validator. #895
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As discussed in issue #894 I thought it would be useful for
assertString.js
to provide which invalid type was used as an input.It checks explicitly for
null
, otherwise it will usetypeof input
. Iftypeof input === 'object'
it will use the object's constructor's name (since'object'
alone is rarely helpful), though if that seems like overkill I can take that out.