chore(release): ensure correct vermoji baked into distributable (#4836)

this commit fixes a bug in our release scripts where the vermoji
generated in the prerelease step of the process would not be properly
propagated to the release step. when the entire process was manual, we'd
do it all in one fell swooop, writing a tiny file to disk and reading
that.

in lieu of that, we can pull the vermoji off of the head of the
CHANGELOG.md! this ensures consistency between the two - running
`stencil info` and looking at the changelog should show the same emoji.

note that this change intentionally does not get applied to the
`getOptions` function for releases. since we still technically support
manual releases, adding the change there for vermoji generation would
negatively impact vermoji generation

Author: rwaskiewicz

scripts/release.ts

@@ -7,6 +7,7 @@ import { promptRelease } from './release-prompts';
 import { runReleaseTasks } from './release-tasks';
 import { BuildOptions, getOptions } from './utils/options';
 import { getNewVersion } from './utils/release-utils';
+import { getLatestVermoji } from './utils/vermoji';
 
 /**
  * Runner for creating a release of Stencil
@@ -88,6 +89,9 @@ export async function release(rootDir: string, args: ReadonlyArray<string>): Pro
     // this was bumped already, we just need to copy it from package.json into this field
     prepareOpts.version = prepareOpts.packageJson.version;
 
+    // we generated a vermoji during the preparation step, let's grab it from the changelog
+    prepareOpts.vermoji = getLatestVermoji(prepareOpts.changelogPath);
+
     const tagIdx = args.indexOf('--tag');
     let newTag = null;
     if (tagIdx === -1 || tagIdx === args.length) {

scripts/utils/vermoji.ts

@@ -338,3 +338,34 @@ export function getVermoji(changelogPath: string) {
     }
   }
 }
+
+/**
+ * Pull the most recently used vermoji for the provided changelog path
+ * @param changelogPath the path to the changelog to parse
+ * @returns the vermoji found in the changelog, otherwise use a default value.
+ */
+export function getLatestVermoji(changelogPath: string) {
+  let changelogContents = null;
+  try {
+    changelogContents = fs.readFileSync(changelogPath, 'utf8');
+  } catch (err: unknown) {
+    console.error(`Unable to read the changelog at path '${changelogPath}' - ${err}.`);
+    console.error(`Defaulting to ${UNKNOWN_VERMOJI}`);
+    return UNKNOWN_VERMOJI;
+  }
+
+  if (!changelogContents) {
+    console.error(`The changelog at '${changelogPath}' was empty!`);
+    console.error(`Defaulting to ${UNKNOWN_VERMOJI}`);
+    return UNKNOWN_VERMOJI;
+  }
+
+  // grab the first line of the changelog
+  const firstLine = changelogContents.trimStart().split('\n')[0];
+  // match the first line of the changelog with a string that has:
+  // - one or more pound signs (#), followed by a space
+  // - capture the first non-space character(s)
+  const match = firstLine.match(/^#+\s(\S+)/);
+  // if a match was found, return the value in the first capture group. otherwise, use the default vermoji
+  return match ? match[1] : UNKNOWN_VERMOJI;
+}