feat: pass cwd and env context to plugins

- Allow to run semantic-release (via API) from anywhere passing the current working directory.
- Allows to simplify the tests and to run them in parallel in both the core and plugins.

lib/get-last-release.js

@@ -20,18 +20,17 @@ const {gitTags, isRefInHistory, gitTagHead} = require('./git');
  * - Sort the versions
  * - Retrive the highest version
  *
- * @param {String} tagFormat Git tag format.
- * @param {Object} logger Global logger.
+ * @param {Object} context semantic-release context.
+ *
  * @return {Promise<LastRelease>} The last tagged release or `undefined` if none is found.
  */
-module.exports = async (tagFormat, logger) => {
+module.exports = async ({cwd, env, options: {tagFormat}, logger}) => {
   // Generate a regex to parse tags formatted with `tagFormat`
   // by replacing the `version` variable in the template by `(.+)`.
   // The `tagFormat` is compiled with space as the `version` as it's an invalid tag character,
   // so it's guaranteed to no be present in the `tagFormat`.
   const tagRegexp = `^${escapeRegExp(template(tagFormat)({version: ' '})).replace(' ', '(.+)')}`;
-
-  const tags = (await gitTags())
+  const tags = (await gitTags({cwd, env}))
     .map(tag => ({gitTag: tag, version: (tag.match(tagRegexp) || new Array(2))[1]}))
     .filter(
       tag => tag.version && semver.valid(semver.clean(tag.version)) && !semver.prerelease(semver.clean(tag.version))
@@ -40,11 +39,11 @@ module.exports = async (tagFormat, logger) => {
 
   debug('found tags: %o', tags);
 
-  const tag = await pLocate(tags, tag => isRefInHistory(tag.gitTag), {concurrency: 1, preserveOrder: true});
+  const tag = await pLocate(tags, tag => isRefInHistory(tag.gitTag, {cwd, env}), {preserveOrder: true});
 
   if (tag) {
     logger.log('Found git tag %s associated with version %s', tag.gitTag, tag.version);
-    return {gitHead: await gitTagHead(tag.gitTag), ...tag};
+    return {gitHead: await gitTagHead(tag.gitTag, {cwd, env}), ...tag};
   }
 
   logger.log('No git tag version found');