Function createSourceMapGenerator

test/fixtures/snapshot/typescript.js:89985–90265

(host, file, sourceRoot, sourcesDirectoryPath, generatorOptions)

var ts;
(function (ts) {
    function createSourceMapGenerator(host, file, sourceRoot, sourcesDirectoryPath, generatorOptions) {
        var _a = generatorOptions.extendedDiagnostics
            ? ts.performance.createTimer("Source Map", "beforeSourcemap", "afterSourcemap")
            : ts.performance.nullTimer, enter = _a.enter, exit = _a.exit;
        // Current source map file and its index in the sources list
        var rawSources = [];
        var sources = [];
        var sourceToSourceIndexMap = new ts.Map();
        var sourcesContent;
        var names = [];
        var nameToNameIndexMap;
        var mappingCharCodes = [];
        var mappings = "";
        // Last recorded and encoded mappings
        var lastGeneratedLine = 0;
        var lastGeneratedCharacter = 0;
        var lastSourceIndex = 0;
        var lastSourceLine = 0;
        var lastSourceCharacter = 0;
        var lastNameIndex = 0;
        var hasLast = false;
        var pendingGeneratedLine = 0;
        var pendingGeneratedCharacter = 0;
        var pendingSourceIndex = 0;
        var pendingSourceLine = 0;
        var pendingSourceCharacter = 0;
        var pendingNameIndex = 0;
        var hasPending = false;
        var hasPendingSource = false;
        var hasPendingName = false;
        return {
            getSources: function () { return rawSources; },
            addSource: addSource,
            setSourceContent: setSourceContent,
            addName: addName,
            addMapping: addMapping,
            appendSourceMap: appendSourceMap,
            toJSON: toJSON,
            toString: function () { return JSON.stringify(toJSON()); }
        };
        function addSource(fileName) {
            enter();
            var source = ts.getRelativePathToDirectoryOrUrl(sourcesDirectoryPath, fileName, host.getCurrentDirectory(), host.getCanonicalFileName, 
            /*isAbsolutePathAnUrl*/ true);
            var sourceIndex = sourceToSourceIndexMap.get(source);
            if (sourceIndex === undefined) {
                sourceIndex = sources.length;
                sources.push(source);
                rawSources.push(fileName);
                sourceToSourceIndexMap.set(source, sourceIndex);
            }
            exit();
            return sourceIndex;
        }
        /* eslint-disable boolean-trivia, no-null/no-null */
        function setSourceContent(sourceIndex, content) {
            enter();
            if (content !== null) {