Adds version() function (#108)

index.ts

@@ -196,6 +196,18 @@ class Ogr2ogr implements PromiseLike<Result> {
   }
 }
 
-export default function ogr2ogr(input: Input, opts?: Options): Ogr2ogr {
+function ogr2ogr(input: Input, opts?: Options): Ogr2ogr {
   return new Ogr2ogr(input, opts)
 }
+
+ogr2ogr.version = async () => {
+  let vers = await new Promise<string>((res, rej) => {
+    execFile("ogr2ogr", ["--version"], {}, (err, stdout) => {
+      if (err) rej(err)
+      res(stdout)
+    })
+  })
+  return vers.trim()
+}
+
+export default ogr2ogr

index_test.ts

@@ -11,6 +11,9 @@ import ogr2ogr from "./"
 let dir = __dirname + "/testdata/"
 
 test(async (t) => {
+  const vers = await ogr2ogr.version()
+  t.match(vers, /^GDAL /)
+
   interface TT {
     file?: string
     url?: string

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ogr2ogr",
-  "version": "5.0.0",
+  "version": "5.1.0",
   "description": "ogr2ogr wrapper w/ multiple format support",
   "keywords": [
     "ogr2ogr",

readme.md

@@ -88,6 +88,17 @@ The **`output`** object has the following properties:
 
 The callback API supports the same options as above but in a NodeJS style callback format.
 
+### ogr2ogr.version() -> Promise\<string\>
+
+Retrieve the version of `ogr2ogr` that will be called by default by this library (same as calling `ogr2ogr --version` from command line).
+
+```javascript
+const version = await ogr2ogr.version()
+console.log(version)
+
+// GDAL X.X.X, released XXXX/XX/XX
+```
+
 ## Tips and tricks
 
 Running `ogr2ogr` in a [Docker container][6]:

tsconfig.json

@@ -12,7 +12,7 @@
     "declaration": true,
     "outDir": "./dist/cjs",
     "esModuleInterop": true,
-    "resolveJsonModule": true,
+    "resolveJsonModule": true
   },
-  "exclude": ["node_modules", "dist"],
+  "exclude": ["node_modules", "dist"]
 }