refactor: move LazyString proxy to compat.jl

Author: AayushSabharwal

src/ExprTools.jl

@@ -2,9 +2,10 @@ module ExprTools
 
 export args_tuple_expr, combinedef, parameters, signature, splitdef
 
+include("compat.jl")
 include("function.jl")
 include("method.jl")
 include("type_utils.jl")
 include("def_tools.jl")
 
-end  # module
+end  # module

src/compat.jl

@@ -0,0 +1,6 @@
+@static if !isdefined(Base, :LazyString)
+    # `LazyString` was added in Julia 1.8. On older versions fall back to eagerly
+    # building the string; correctness is preserved, only the laziness is lost.
+    LazyString(parts...) = string(parts...)
+end
+

src/function.jl

@@ -1,9 +1,3 @@
-@static if !isdefined(Base, :LazyString)
-    # `LazyString` was added in Julia 1.8. On older versions fall back to eagerly
-    # building the string; correctness is preserved, only the laziness is lost.
-    LazyString(parts...) = string(parts...)
-end
-
 """
     splitdef(ex::Expr; throw::Bool=true) -> Union{Dict{Symbol,Any}, Nothing}