reversed word contain escape char should throw error but not

[bvanjoi]

Describe the bug

This code should throw syntax error but not

Input code

// /tests/fixture/issues-2xxx/2844/input/index.js
class X { st\u0061tic y() { } }

Config

{
  "jsc": {
    "parser": {
      "syntax": "ecmascript",
      "jsx": false
    },
    "target": "es2015",
    "loose": false,
    "minify": {
      "compress": {
        "arguments": false,
        "arrows": true,
        "booleans": true,
        "booleans_as_integers": false,
        "collapse_vars": true,
        "comparisons": true,
        "computed_props": true,
        "conditionals": true,
        "dead_code": true,
        "directives": true,
        "drop_console": false,
        "drop_debugger": true,
        "evaluate": true,
        "expression": false,
        "hoist_funs": false,
        "hoist_props": true,
        "hoist_vars": false,
        "if_return": true,
        "join_vars": true,
        "keep_classnames": false,
        "keep_fargs": true,
        "keep_fnames": false,
        "keep_infinity": false,
        "loops": true,
        "negate_iife": true,
        "properties": true,
        "reduce_funcs": false,
        "reduce_vars": false,
        "side_effects": true,
        "switches": true,
        "typeofs": true,
        "unsafe": false,
        "unsafe_arrows": false,
        "unsafe_comps": false,
        "unsafe_Function": false,
        "unsafe_math": false,
        "unsafe_symbols": false,
        "unsafe_methods": false,
        "unsafe_proto": false,
        "unsafe_regexp": false,
        "unsafe_undefined": false,
        "unused": true,
        "const_to_let": true,
        "pristine_globals": true
      },
      "mangle": false
    }
  },
  "module": {
    "type": "es6"
  },
  "minify": true,
  "isModule": "unknown"
}

Link to the code that reproduces this issue

https://play.swc.rs/?version=1.12.14&code=H4sIAAAAAAAAA0vOSSwuVohQqFYoLokpNTAwMyzJTFao1NAEitQq1AIAwysljB8AAAA%3D&config=H4sIAAAAAAAAA32US47bMAyG9zlF4HUXbYHpYg7QXc8gKBLlKGOLhkglMQa5%2B9CvJJ3Q3tn8%2BJMSSfFzt99XJ3LV%2B%2F5TPuWns5kg3%2F%2FFQn1iexVLBa615HLsuPqx0BMNKNiGYDTdJlKxzTXwqKLfP3%2B9zYqqQSRYFLOtjSmG%2Fjmnw7bLQPRkE6uELC0kpv%2F1M8t4GQDn8mw%2FIDZg0wYxlkxMDDVkLbDDprEdgTnbrEQZTmpzJNRSDLAweNNl7FSefOSISXK%2BUg%2FWG4ceFBQzOI5n0GSSS2SJ5HrKfUbs4VDqeuzzNzWcbVMsKznhOrZETqtEPWIkNqEkrYQTXKnBBOfiflfGYDJwyelVd8KYVnryASAVaCxRsi1ocUePIPO0pg6bypiCjCz3Cpf51m6ZoJaimhiDUtmhMpA5at3M4IuDobJOO86MV8pH0YOBEGRWlNB0ieyOWlLuO8CgAOmvDdpUTcDcX%2BEKHx7EBv4rt2R9wGaP1vJxnVLfHrDZSNACH9FvOEgrGNdxli1x7dZ5SR5kNMCrLoVG8LoE5AEwmmbcly%2BzIc9DIpq6wcNjTcwOt%2Fsebm2qH%2B99WsW72aFq0ZcRzkt%2B6O%2B0mv9UD6dlCy8nqCL9W4Ry%2Bo%2BEl1Ttbl%2Bt8e50NAYAAA%3D%3D

SWC Info output

No response

Expected behavior

throw syntax error

Actual behavior

No response

Version

1.12.14

Additional context

• ts: https://www.typescriptlang.org/play/?#code/MYGwhgzhAEAa0G9oQC4B0CuAGLA2AjCgJbDQCeAFAJSLQC+9QA

[swc-bot]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.