Inspectors

Inspectors are inspection methods for evaluating data and are easiest explained through these examples expressed as text:

• string equals "foo"
• string matches /^[Fo][Oo][Oo]/
• length(value) >= 3
• IP address is loopback
• IP address is private
• data is gzip

Settings

Each inspector is unique and defines its own options, but there are common settings shared across all inspectors:

• key: retrieves a value from an object for inspection
• negate: reverses the outcome of an inspection (true becomes false and false becomes true)

If the inspector supports interpreting data types, then key can be omitted.