customProviderHeaders validation fails for well typed customProviderHeaders during verification

[adamwitko]

Software versions

• OS: Mac OSX 12.3
• Pact Node version: 13.7.2
• Node Version: 18.7.0

Issue Checklist

Please confirm the following:

• I have upgraded to the latest
• I have the read the FAQs in the Readme
• I have triple checked, that there are no unhandled promises in my code
• I have set my log level to debug and attached a log file showing the complete request/response cycle
• For bonus points and virtual high fives, I have created a reproduceable git repository (see below) to illustrate the problem

Expected behaviour

Well formed customProviderHeaders are passed to the verification.

Actual behaviour

An error is thrown when executing the verification.

TypeError: customProviderHeaders

      32 |       : process.env.CI_COMMIT_BRANCH
      33 |
    > 34 |     const output = await verifyProvider(
         |                    ^
      35 |       {
      36 |         provider: 'delivery-promise-service',
      37 |         branch: branch!,

      at assertImpl (../../../../../pact-provider/node_modules/check-types/src/check-types.js:730:11)
      at assertPredicate (../../../../../pact-provider/node_modules/check-types/src/check-types.js:718:5)
      at ../../../../../pact-provider/node_modules/check-types/src/check-types.js:710:14
      at ../../../../../pact-provider/node_modules/@pact-foundation/pact-core/src/verifier/validateOptions.ts:245:22
          at Array.map (<anonymous>)
      at ../../../../../pact-provider/node_modules/@pact-foundation/pact-core/src/verifier/validateOptions.ts:244:13
          at Array.map (<anonymous>)
      at Object.validateOptions (../../../../../pact-provider/node_modules/@pact-foundation/pact-core/src/verifier/validateOptions.ts:232:5)
      at new Verifier (../../../../../pact-provider/node_modules/@pact-foundation/pact-core/src/verifier/index.ts:16:20)
      at Object.<anonymous>.exports.default (../../../../../pact-provider/node_modules/@pact-foundation/pact-core/src/verifier/index.ts:30:56)
      at Pact.verifyPacts (../../../../../pact-provider/node_modules/@pact-foundation/pact-core/src/pact.ts:156:27)
      at ../../../../../pact-provider/node_modules/@pact-foundation/src/dsl/verifier/verifier.ts:110:29
      at Object.<anonymous> (src/__tests__/pact/delivery-promise-service.verifier.spec.ts:34:20)

Steps to reproduce

Specify customProviderHeaders that adhere to the object type { [k: string]: string }.

Relevant log files

Please ensure you set logging to DEBUG and attach any relevant log files here (or link to a gist).

[mefellows]

Thanks Adam - leaving this open to support the backwards compatible type definition of string[]

[mefellows]

I've restored the previous type shape support to pact-core in #395 .