Typescript generator crashes if discriminant values start with digits

[twitchard]

CLI Version from fern.config.json

0.50.6

Generator & Version from generators.yml

fernapi/fern-typescript-node-sdk 0.39.7

Minimal API Specification

openapi: 3.1.0
info:
  title: Minimal Repro
  version: '1.0'
paths: {}
components:
  schemas:
    Foo:
      type: object
      properties:
        type:
          const: 1foo
    Bar:
      type: object
      properties:
        type:
          const: 1bar
    SingleDiscriminatedSchema:
      oneOf:
        - $ref: "#/components/schemas/Foo"
        - $ref: "#/components/schemas/Bar"
      discriminator:
        propertyName: type
        mapping:
          1foo: "#/components/schemas/Foo"
          1bar: "#/components/schemas/Bar"

Actual Generated Code

Crashes with

ERROR 2025-01-22T21:55:39.885Z [unioned]: fernapi/fern-typescript-node-sdk Unexpected! Inserting syntax kind of InterfaceDeclaration, but ExpressionStatement was inserted.
DEBUG 2025-01-22T21:55:39.885Z [unioned]: fernapi/fern-typescript-node-sdk Error
                                                                               at e$a (/Users/twitchard/.npm/_npx/abf6f9cced229dfb/node_modules/fern-api/cli.cjs:1709:3490)
                                                                               at vJu.failWithoutThrowing (/Users/twitchard/.npm/_npx/abf6f9cced229dfb/node_modules/fern-api/cli.cjs:1709:4389)
                                                                               at vJu.failAndThrow (/Users/twitchard/.npm/_npx/abf6f9cced229dfb/node_modules/fern-api/cli.cjs:1709:4318)
                                                                               at Object.failed (/Users/twitchard/.npm/_npx/abf6f9cced229dfb/node_modules/fern-api/cli.cjs:1798:381)
                                                                               at Object._visit (/Users/twitchard/.npm/_npx/abf6f9cced229dfb/node_modules/fern-api/cli.cjs:94:157941)
                                                                               at Object._visit (/Users/twitchard/.npm/_npx/abf6f9cced229dfb/node_modules/fern-api/cli.cjs:94:157677)
                                                                               at gbu.processUpdate (/Users/twitchard/.npm/_npx/abf6f9cced229dfb/node_modules/fern-api/cli.cjs:1798:277)
                                                                               at Timeout.d [as _onTimeout] (/Users/twitchard/.npm/_npx/abf6f9cced229dfb/node_modules/fern-api/cli.cjs:1798:10517)
                                                                               at process.processTicksAndRejections (node:internal/process/task_queues:105:5)