const github.com/evanw/esbuild/internal/js_ast.BinOpIn

6 uses

	github.com/evanw/esbuild/internal/js_ast (current package)
		js_ast.go#L135: 	BinOpIn
		js_ast.go#L794: 			BinOpInstanceof, BinOpIn:

	github.com/evanw/esbuild/internal/js_parser
		js_parser.go#L700: 			js_ast.BinOpLt, js_ast.BinOpLe, js_ast.BinOpGt, js_ast.BinOpGe, js_ast.BinOpIn, js_ast.BinOpInstanceof,
		js_parser.go#L856: 			js_ast.BinOpLt, js_ast.BinOpLe, js_ast.BinOpGt, js_ast.BinOpGe, js_ast.BinOpIn,
		js_parser.go#L3917: 			left = js_ast.Expr{Loc: left.Loc, Data: &js_ast.EBinary{Op: js_ast.BinOpIn, Left: left, Right: p.parseExpr(js_ast.LCompare)}}

	github.com/evanw/esbuild/internal/js_printer
		js_printer.go#L2036: 		wrap := level >= entry.Level || (e.Op == js_ast.BinOpIn && (flags&forbidIn) != 0)