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flow-remove-types throws a syntax error on ES import attributes #9347
Description
flow-remove-types version: 2.295.0
Flow version: 0.295.0
Actual behavior
The Flow parser successfully parses the following script without any errors:
/** @flow @file index.js */
import ruleset from "./htmlhint.json" with { type: "json" };However, running flow-remove-types on the same file results in a syntax error:
$ npx flow-remove-types --out-file .\index.out.js .\index.js
.\index.js
↳ Syntax Error: ';' expected (2:38)
import ruleset from "./htmlhint.json" with { type: "json" };
^
1: import ruleset from "./htmlhint.json" with { type: "json" };Expected behavior
The command should complete successfully and generate the output file without throwing an error:
$ npx flow-remove-types --out-file .\index.out.js .\index.js
.\index.js
↳ .\index.out.js- Link to Try-Flow or Github repo: N/A (The issue is specific to
flow-remove-typesand does not require Flow server execution or.flowconfigsettings.)
Activity
hiSandog commentedon Jun 29, 2026
For
importattributes, it may help to include both parser and stripping expectations.flow-remove-typesusers usually expect syntax it does not understand to be preserved when it is not type syntax, so a fixture withimport data from './x.json' with { type: 'json' }would clarify whether the failure is in parser support or in the transform step. That would also guard parity with the main Flow parser.SamChou19815 commentedon Oct 22, 2026
now it works