TypeScript: extract a member with no type

[yamato@dev64 ts-class-member-with-props.d]$ cat input2.ts 
cat input2.ts 
class C {
      a
      b
}
[yamato@dev64 ts-class-member-with-props.d]$ tsc input2.ts 
tsc input2.ts 
[yamato@dev64 ts-class-member-with-props.d]$ ~/bin/ctags -o - input2.ts 
~/bin/ctags -o - input2.ts 
C	input2.ts	/^class C {$/;"	c
b	input2.ts	/^      b$/;"	p	class:C