ts-loader: Cannot compile with TS 2.9.1 & "resolveJsonModule"

Expected Behaviour

TS 2.9 added a new option to allow JSON imports and get proper types doing so (without resorting to somewhat dirty workarounds using ambient definitions), with the resolveJsonModule compiler option.

It should compile as usual when using this new flag.

Actual Behaviour

An error is thrown when running webpack with ts-loader:

/Users/mehdibenadda/Development/fun-cms/node_modules/typescript/lib/typescript.js:107386
            return program.getOptionsDiagnostics(cancellationToken).concat(program.getGlobalDiagnostics(cancellationToken));
                           ^

TypeError: Cannot read property 'getOptionsDiagnostics' of undefined
    at Object.getCompilerOptionsDiagnostics (/Users/mehdibenadda/Development/fun-cms/node_modules/typescript/lib/typescript.js:107386:28)
    at provideCompilerOptionDiagnosticErrorsToWebpack (/Users/mehdibenadda/Development/fun-cms/node_modules/ts-loader/dist/after-compile.js:39:31)
    at /Users/mehdibenadda/Development/fun-cms/node_modules/ts-loader/dist/after-compile.js:17:9
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/HookCodeFactory.js:24:12), <anonymous>:16:1)
    at AsyncSeriesHook.lazyCompileHook [as _callAsync] (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/Hook.js:35:21)
    at compilation.seal.err (/Users/mehdibenadda/Development/fun-cms/node_modules/webpack/lib/Compiler.js:497:30)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/HookCodeFactory.js:24:12), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook [as _callAsync] (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/Hook.js:35:21)
    at hooks.optimizeAssets.callAsync.err (/Users/mehdibenadda/Development/fun-cms/node_modules/webpack/lib/Compilation.js:985:35)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/HookCodeFactory.js:24:12), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook [as _callAsync] (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/Hook.js:35:21)
    at hooks.optimizeChunkAssets.callAsync.err (/Users/mehdibenadda/Development/fun-cms/node_modules/webpack/lib/Compilation.js:976:32)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/HookCodeFactory.js:24:12), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook [as _callAsync] (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/Hook.js:35:21)
    at hooks.additionalAssets.callAsync.err (/Users/mehdibenadda/Development/fun-cms/node_modules/webpack/lib/Compilation.js:971:36)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/HookCodeFactory.js:24:12), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook [as _callAsync] (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/Hook.js:35:21)
    at hooks.optimizeTree.callAsync.err (/Users/mehdibenadda/Development/fun-cms/node_modules/webpack/lib/Compilation.js:967:32)
    at AsyncSeriesHook.eval [as callAsync] (eval at create (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/HookCodeFactory.js:24:12), <anonymous>:6:1)
    at AsyncSeriesHook.lazyCompileHook [as _callAsync] (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/Hook.js:35:21)
    at Compilation.seal (/Users/mehdibenadda/Development/fun-cms/node_modules/webpack/lib/Compilation.js:904:27)
    at hooks.make.callAsync.err (/Users/mehdibenadda/Development/fun-cms/node_modules/webpack/lib/Compiler.js:494:17)
    at _err0 (eval at create (/Users/mehdibenadda/Development/fun-cms/node_modules/tapable/lib/HookCodeFactory.js:24:12), <anonymous>:11:1)
    at _addModuleChain (/Users/mehdibenadda/Development/fun-cms/node_modules/webpack/lib/Compilation.js:770:12)
    at processModuleDependencies.err (/Users/mehdibenadda/Development/fun-cms/node_modules/webpack/lib/Compilation.js:709:9)
    at process._tickCallback (internal/process/next_tick.js:150:11)

Steps to Reproduce the Problem

Compile a project using webpack, ts-loader and typescript@2.9.1 with resolveJsonModule (and esModuleInterop) enabled and an import for a JSON file somewhere in the project.

Removing resolveJsonModule and using an ambient declaration works fine. I tried this with ts-loader@4.4.1 and typescript@next

Location of a Minimal Repository that Demonstrates the Issue.

https://github.com/mbenadda/ts-loader-issue-793-example-repo

See instructions in README, just clone, yarn install and yarn webpack to see the issue.