Add flag for TypeScript modules

Author: blakeembrey

config/elasticsearch/npms.json5

@@ -341,6 +341,7 @@
                         "deprecated": { "type": "string", "index": "not_analyzed" },
                         "insecure": { "type": "integer" },
                         "unstable": { "type": "boolean" },
+                        "dts": { "type": "boolean" },
                     },
                 },
                 "evaluation": {

lib/analyze/collect/source.js

@@ -23,17 +23,19 @@ const log = logger.child({ module: 'collect/source' });
 /**
  * Inspects important files, such as the tests and README file sizes.
  *
- * @param {object} data The package data
- * @param {string} dir  The package directory
+ * @param {object} data        The package data
+ * @param {string} dir         The package directory
+ * @param {object} packageJson The latest package.json data (normalized)
  *
  * @return {Promise} The promise for the inspection result
  */
-function inspectFiles(data, dir) {
+function inspectFiles(data, dir, packageJson) {
     return Promise.props({
         readmeSize: data.readmeFilename ? fileSize(`${dir}/${data.readmeFilename}`) : 0,
         testsSize: detectRepoTestFiles(dir).then((files) => fileSize(files)),
         hasNpmIgnore: isRegularFile(`${dir}/.npmignore`).then((is) => is || null),
         hasShrinkwrap: isRegularFile(`${dir}/npm-shrinkwrap.json`).then((is) => is || null),
+        hasTypeScriptDeclaration: isRegularFile(path.join(dir, String(packageJson.typings || packageJson.types || 'index.d.ts'))).then((is) => is || null),
         hasChangelog: detectRepoChangelog(dir).then((file) => !!file).then((is) => is || null),
     });
 }
@@ -183,7 +185,7 @@ function source(data, packageJson, downloaded, options) {
 
     // Analyze source first because the external tools add files to the directory
     return promisePropsSettled({
-        files: inspectFiles(data, downloaded.dir),
+        files: inspectFiles(data, downloaded.dir, packageJson),
         repositorySize: fileSize.dir(downloaded.dir),
         linters: detectRepoLinters(downloaded.dir),
         coverage: fetchCodeCoverage(packageJson, badges),

lib/scoring/score.js

@@ -158,6 +158,7 @@ function buildScore(analysis, aggregation) {
             deprecated: collected.metadata.deprecated,
             insecure: collected.source && collected.source.vulnerabilities ? collected.source.vulnerabilities.length : null,
             unstable: semver.lt(collected.metadata.version, '1.0.0', true) ? true : null,
+            dts: collected.source && collected.source.hasTypeScriptDeclaration,
         },
         evaluation,
         score: {