[2.1.0] TypeError: is(...).replace is not a function

[Starfox64]

Describe the bug
After the release of 2.1.0, the Something went wrong... error is displayed.

TypeError: is(...).replace is not a function
    at https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:1202:826
    at https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:1092:9329
    at https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:1092:3516
    at Ke (https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:2:534482)
    at t.track (https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:2:538805)
    at Ch (https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:1092:3492)
    at l (https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:1092:9307)
    at oa (https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:2:362151)
    at Ba (https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:2:371669)
    at Fa (https://cdn.jsdelivr.net/npm/redoc@latest/bundles/redoc.standalone.js:2:371003)

Reverting to 2.0.0 solves this issue.

Expected behavior
No error.

Minimal reproducible OpenAPI snippet(if possible)
https://demo.franchiseoncloud.fr/v2/openapi

Screenshots
N/A

Additional context
N/A

[gmoorcroft]

Experiencing the same issue.
Sample yaml file that is failing on 2.1.0 and succeeding on 2.0.0 is available here - https://www.thalesdocs.com/dpod/extern/api/swagger-public.yaml

[yilunandrewgao]

This error seems to occur when there's a default: [] in the openapi file. Is this code trying to call replace on an empty list?

[RomanHotsiy]

We're looking into it

[AlexVarchuk]

Released. Please verify in 2.1.1

[adamaltman]

@AlexVarchuk please add tests to prevent regressions.