export const getLanguageService = function()

in src/service.ts [35:84]
36 lines of code
4 McCabe index (conditional complexity)

export const getLanguageService = function( params: ASLLanguageServiceParams): LanguageService {
    const builtInParams = {}

    const languageService = getLanguageServiceVscode({ ...params, ...builtInParams })
    const doValidation = languageService.doValidation.bind(languageService) as typeof languageService.doValidation
    const doComplete = languageService.doComplete.bind(languageService) as typeof languageService.doComplete

    languageService.configure({
        validate: true,
        allowComments: false,
        schemas: [
            {
                uri: LANGUAGE_IDS.JSON,
                fileMatch: ['*'],
                schema: aslSchema as JSONSchema
            }
        ]
    })

    languageService.doValidation = async function(document, jsonDocument, documentSettings) {
        // vscode-json-languageservice will always set severity as warning for JSONSchema validation
        // there is no option to configure this behavior so severity needs to be overwritten as error
        const diagnostics = (await doValidation(document, jsonDocument, documentSettings)).map(diagnostic => {
            // Non JSON Schema validation will have source: 'asl'
            if (diagnostic.source !== LANGUAGE_IDS.JSON) {
                return { ...diagnostic, severity: DiagnosticSeverity.Error }
            }

            return diagnostic
        }) as Diagnostic[]

        const rootNode = (jsonDocument as ASTTree).root

        if (rootNode && isObjectNode(rootNode)) {
            const aslDiagnostics = validateStates(rootNode, document, true, params.aslOptions)

            return diagnostics.concat(aslDiagnostics)
        }

        return diagnostics
    }

    languageService.doComplete = async function(document, position, doc) {
        const jsonCompletions = await doComplete(document, position, doc);

        return completeAsl(document, position, doc, jsonCompletions, params.aslOptions);
    }

    return languageService
}