Using 'import' crashes the REPL

Windows の Node.js REPL で、単独の import 入力を使って失敗を再現し、その後 internal/readline/emitKeypressEvents と、レポートに示されている Acorn の parseImport スタックを通る REPL の経路を追跡します。import を入力しても REPL がクラッシュせず、この入力に対するリグレッションカバレッジがあることを完了条件とします。

Version

26.1.0

Platform

Windows

Subsystem

repl

What steps will reproduce the bug?

C:\>node
Welcome to Node.js v26.1.0.
Type ".help" for more information.
> import
node:internal/readline/emitKeypressEvents:74
            throw err;
            ^

SyntaxError: Unexpected token (1:6)
    at pp$4.raise (node:internal/deps/acorn/acorn/dist/acorn:3766:15)
    at pp$9.unexpected (node:internal/deps/acorn/acorn/dist/acorn:799:10)
    at pp$9.expect (node:internal/deps/acorn/acorn/dist/acorn:793:28)
    at pp$8.parseImportSpecifiers (node:internal/deps/acorn/acorn/dist/acorn:2020:10)
    at pp$8.parseImport (node:internal/deps/acorn/acorn/dist/acorn:1966:30)
    at pp$8.parseStatement (node:internal/deps/acorn/acorn/dist/acorn:1019:51)
    at pp$8.parseTopLevel (node:internal/deps/acorn/acorn/dist/acorn:856:23)
    at Parser.parse (node:internal/deps/acorn/acorn/dist/acorn:611:17)
    at Parser.parse (node:internal/deps/acorn/acorn/dist/acorn:678:37)
    at parse (node:internal/deps/acorn/acorn/dist/acorn:6254:19) {
  pos: 6,
  loc: Position { line: 1, column: 6 },
  raisedAt: 6
}

Node.js v26.1.0

C:\>

How often does it reproduce? Is there a required condition?

everytime

What is the expected behavior? Why is that the expected behavior?

no crash

What do you see instead?

crash

Additional information

No response