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Dominic ElmandCameron
3dbf1409ab
Treat contextual keywords spelled with a Unicode escape (`st\u0061tic`,
`\u0061sync`, `g\u0065t`, …) as property names rather than modifiers.
Such a token is an IdentifierName and cannot match a keyword terminal,
so `class A { st\u0061tic
x }` declares two fields named `static` and `x`. Previously it was
parsed as `static x` and reported "Keywords cannot contain escape
characters".
`try_parse_modifier` and `parse_contextual_modifier` now skip escaped
tokens. Invalid forms such as `class X { st\u0061tic y() {} }` are still
rejected. The error is now reported at the token after the name, as
Babel does, which accounts for the updated parser snapshots.
The new `misc/pass` fixture covers fields named `static`, `async`,
`get`, `set`, and `accessor` that end at a line break. The rejected
forms are already covered by Babel and test262.
Validated with scoped Rust checks and full parser conformance.
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Co-authored-by: Cameron <cameron.clark@hey.com>