Fix glob and prettier plugin bugs

- The glob library returns paths relative to the root directory you pass it, not
  the process cwd. Set `absolute` so that we get read the right XLB paths.

- Explicitly tell Prettier to resolve the XML plugin. While it was working fine
  from _this_ repo, when lit-localize was installed in another package, the
  plugin was not being automatically loaded. Not sure why exactly that is,
  maybe it auto-loads @prettier plugins only in some node_modules/ layouts.

Author: aomarks

CHANGELOG.md

@@ -5,7 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-<!-- ## Unreleased -->
+## Unreleased
+
+- Fix incorrect path resolution when loading XLB files.
+- Fix errors relating to prettier xml plugin resolution.
 
 ## [0.2.1] - 2020-05-13
 

src/formatters/xlb.ts

@@ -79,7 +79,7 @@ class XlbFormatter implements Formatter {
     const files = await new Promise<string[]>((resolve, reject) =>
       glob(
         this.xlbConfig.translationsGlob,
-        {cwd: this.config.baseDir},
+        {cwd: this.config.baseDir, absolute: true},
         (err, files) => {
           if (err) {
             reject(err);

src/formatters/xml-utils.ts

@@ -53,6 +53,7 @@ export function getNonEmptyAttributeOrThrow(
 export function formatXml(xmlStr: string): string {
   // TODO(aomarks) Types for the xml-parser plugin.
   return prettier.format(xmlStr, ({
+    plugins: ['@prettier/plugin-xml'],
     parser: 'xml',
     xmlWhitespaceSensitivity: 'ignore',
   } as unknown) as prettier.Options);