Expose platform-arch of vendored binaries #2928

lib/utility.js

@@ -1,5 +1,7 @@
 'use strict';
 
+const fs = require('fs');
+const path = require('path');
 const events = require('events');
 const detectLibc = require('detect-libc');
 
@@ -47,7 +49,22 @@ let versions = {
 };
 try {
   versions = require(`../vendor/${versions.vips}/${platformAndArch}/versions.json`);
-} catch (err) {}
+} catch (_err) { /* ignore */ }
+
+/**
+ * An Object containing the platform and architecture
+ * of the current and installed vendored binaries.
+ * @member
+ * @example
+ * console.log(sharp.vendor);
+ */
+const vendor = {
+  current: platformAndArch,
+  installed: []
+};
+try {
+  vendor.installed = fs.readdirSync(path.join(__dirname, `../vendor/${versions.vips}`));
+} catch (_err) { /* ignore */ }
 
 /**
  * Gets or, when options are provided, sets the limits of _libvips'_ operation cache.
@@ -176,5 +193,6 @@ module.exports = function (Sharp) {
   Sharp.format = format;
   Sharp.interpolators = interpolators;
   Sharp.versions = versions;
+  Sharp.vendor = vendor;
   Sharp.queue = queue;
 };