Function loadModuleFromFile

test/fixtures/snapshot/typescript.js:43517–43532

* @param {boolean} onlyRecordFailures - if true then function won't try to actually load files but instead record all attempts as failures. This flag is necessary * in cases when we know upfront that all load attempts will fail (because containing folder does not exists) however we still need t

(extensions, candidate, onlyRecordFailures, state)

     * in cases when we know upfront that all load attempts will fail (because containing folder does not exists) however we still need to record all failed lookup locations.
     */
    function loadModuleFromFile(extensions, candidate, onlyRecordFailures, state) {
        if (extensions === Extensions.Json || extensions === Extensions.TSConfig) {
            var extensionLess = ts.tryRemoveExtension(candidate, ".json" /* Extension.Json */);
            var extension = extensionLess ? candidate.substring(extensionLess.length) : "";
            return (extensionLess === undefined && extensions === Extensions.Json) ? undefined : tryAddingExtensions(extensionLess || candidate, extensions, extension, onlyRecordFailures, state);
        }
        // esm mode resolutions don't include automatic extension lookup (without additional flags, at least)
        if (!(state.features & NodeResolutionFeatures.EsmMode)) {
            // First, try adding an extension. An import of "foo" could be matched by a file "foo.ts", or "foo.js" by "foo.js.ts"
            var resolvedByAddingExtension = tryAddingExtensions(candidate, extensions, "", onlyRecordFailures, state);
            if (resolvedByAddingExtension) {
                return resolvedByAddingExtension;
            }
        }
        return loadModuleFromFileNoImplicitExtensions(extensions, candidate, onlyRecordFailures, state);
    }
    function loadModuleFromFileNoImplicitExtensions(extensions, candidate, onlyRecordFailures, state) {
        // If that didn't work, try stripping a ".js" or ".jsx" extension and replacing it with a TypeScript one;
        // e.g. "./foo.js" can be matched by "./foo.ts" or "./foo.d.ts"