Function validate

typescript/src/ts/validate.ts:52–74

(jsonObject: object)

    return validator;

    function validate(jsonObject: object) {
        const moduleResult = validator.createModuleTextFromJson(jsonObject);
        if (!moduleResult.success) {
            return moduleResult;
        }
        const program = createProgramFromModuleText(moduleResult.data, rootProgram);
        const syntacticDiagnostics = program.getSyntacticDiagnostics();
        const programDiagnostics = syntacticDiagnostics.length ? syntacticDiagnostics : program.getSemanticDiagnostics();
        if (programDiagnostics.length) {
            const checker = program.getTypeChecker();
            const diagnostics = programDiagnostics.map(d => {
                const message = ts.flattenDiagnosticMessageText(d.messageText, "\n");
                // TS error 2740 truncates the missing-properties list to 4 items ("and N more").
                // Use the type checker to reconstruct the full list of missing required properties.
                if (d.code === 2740 && d.file && d.start !== undefined) {
                    return expandMissingPropertiesMessage(checker, d.file, d.start) ?? message;
                }
                return message;
            }).join("\n");
            return error(diagnostics);
        }
        return success(jsonObject as T);
    }

    /**
     * For TypeScript error 2740 (missing required properties, truncated with "and N more"),