strict module has functions for turning “strict mode” on or off.
When strict mode is on, an attempt to use an undeclared global variable will
cause an error. A global variable is considered “undeclared” if it has never
had a value assigned to it. Often this is an indication of a programming error.
By default strict mode is off, unless tarantool was built with the
-DCMAKE_BUILD_TYPE=Debug option – see the description of build options
in section building-from-source.
tarantool> strict = require('strict') --- ... tarantool> strict.on() --- ... tarantool> a = b -- strict mode is on so this will cause an error --- - error: ... variable ''b'' is not declared' ... tarantool> strict.off() --- ... tarantool> a = b -- strict mode is off so this will not cause an error --- ...