Use explicit conversions between types, e.g., '' + x => String(s).
Apply with the Grit CLI
grit apply explicit_type_conversion
Handles string preceding variable
BEFORE
var x = '' + foo;
AFTER
var x = String(foo);
Handles string following variable
BEFORE
var x = a + '';
AFTER
var x = String(a);
Handles interpolated string
BEFORE
var x = foo + '' + bar;
AFTER
var x = String(foo) + bar;
Handles number conversion using +
BEFORE
var x = +foo;
AFTER
var x = Number(foo);
Handles number conversion using *
BEFORE
var x = 1 * foo;
AFTER
var x = Number(foo);
Handles boolean conversion using !!
BEFORE
var x = !!"123";
AFTER
var x = Boolean("123");