fix(conventional-commits): Support modern config builder functions

commands/version/README.md

@@ -166,6 +166,25 @@ Presets are names of built-in or installable configuration for conventional chan
 Presets may be passed as the full name of the package, or the auto-expanded suffix
 (e.g., `angular` is expanded to `conventional-changelog-angular`).
 
+This option is can also be specified in `lerna.json` configuration:
+
+```json
+{
+  "changelogPreset": "angular"
+}
+```
+
+If the preset exports a builder function (e.g. `conventional-changelog-conventionalcommits`), you can specify the [preset configuration](https://github.com/conventional-changelog/conventional-changelog-config-spec) too:
+
+```json
+{
+  "changelogPreset": {
+    "name": "conventionalcommits",
+    "issueUrlFormat": "{{host}}/{{owner}}/{{repository}}/issues/{{id}}"
+  }
+}
+```
+
 ### `--exact`
 
 ```sh

core/conventional-commits/__tests__/__fixtures__/fixed/scripts/config-builder-preset.js

@@ -0,0 +1,27 @@
+"use strict";
+
+// https://git.io/vx5iq (conventional-changelog-angular/conventional-recommended-bump.js, etc)
+const parserOpts = require("./parser-opts");
+const writerOpts = require("./writer-opts");
+const whatBump = require("./what-bump");
+
+// https://git.io/fhyKK
+module.exports = presetOpts;
+
+function presetOpts(param) {
+  if (typeof param !== "function") {
+    return Promise.resolve(
+      Object.assign(param, {
+        parserOpts,
+        writerOpts,
+        whatBump,
+      })
+    );
+  }
+
+  process.nextTick(param, null, {
+    parserOpts,
+    writerOpts,
+    whatBump,
+  });
+}

core/conventional-commits/__tests__/conventional-commits.test.js

@@ -12,6 +12,7 @@ const gitTag = require("@lerna-test/git-tag");
 
 // file under test
 const { recommendVersion, updateChangelog } = require("..");
+const getChangelogConfig = require("../lib/get-changelog-config");
 
 // stabilize changelog commit SHA and datestamp
 expect.addSnapshotSerializer(require("@lerna-test/serialize-changelog"));
@@ -481,6 +482,42 @@ describe("conventional-commits", () => {
       `);
     });
 
+    it("supports config builder presets", async () => {
+      const cwd = await initFixture("fixed");
+
+      const configForPresetNameString = await getChangelogConfig("./scripts/config-builder-preset", cwd);
+      expect(configForPresetNameString).toBeDefined();
+
+      const presetConfigObject = { name: "./scripts/config-builder-preset", key: "value" };
+      const configForPresetConfigObject = await getChangelogConfig(presetConfigObject, cwd);
+
+      expect(configForPresetConfigObject).toBeDefined();
+      expect(configForPresetConfigObject.key).toBe(presetConfigObject.key);
+
+      await gitTag(cwd, "v1.0.0");
+
+      const [, pkg2] = await getPackages(cwd);
+
+      // make a change in package-2
+      await pkg2.set("changed", 1).serialize();
+      await gitAdd(cwd, pkg2.manifestLocation);
+      await gitCommit(cwd, "fix(pkg2): A commit using a legacy callback preset");
+
+      // update version
+      await pkg2.set("version", "1.0.1").serialize();
+
+      const leafChangelog = await updateChangelog(pkg2, "fixed", {
+        changelogPreset: "./scripts/config-builder-preset",
+      });
+
+      expect(leafChangelog.newEntry).toMatchInlineSnapshot(`
+        <a name="1.0.1"></a>
+        ## <small>1.0.1 (YYYY-MM-DD)</small>
+        * fix(pkg2): A commit using a legacy callback preset
+
+      `);
+    });
+
     it("updates independent changelogs", async () => {
       const cwd = await initFixture("independent");
 

core/conventional-commits/lib/get-changelog-config.js

@@ -13,27 +13,37 @@ function isFunction(config) {
   return Object.prototype.toString.call(config) === "[object Function]";
 }
 
-function resolveConfigPromise(presetPackageName) {
+function resolveConfigPromise(presetPackageName, presetConfig) {
   log.verbose("getChangelogConfig", "Attempting to resolve preset %j", presetPackageName);
 
   // eslint-disable-next-line global-require, import/no-dynamic-require
   let config = require(presetPackageName);
 
   log.info("getChangelogConfig", "Successfully resolved preset %j", presetPackageName);
 
-  // legacy presets export an errback function instead of Q.all()
   if (isFunction(config)) {
-    config = pify(config)();
+    try {
+      // try assuming config builder function first
+      config = config(presetConfig);
+    } catch (_) {
+      // legacy presets export an errback function instead of Q.all()
+      config = pify(config)();
+    }
   }
 
   return config;
 }
 
 function getChangelogConfig(changelogPreset = "conventional-changelog-angular", rootPath) {
-  let config = cfgCache.get(changelogPreset);
+  const presetName = typeof changelogPreset === "string" ? changelogPreset : changelogPreset.name;
+  const presetConfig = typeof changelogPreset === "object" ? changelogPreset : {};
+
+  const cacheKey = `${presetName}${presetConfig ? JSON.stringify(presetConfig) : ""}`;
+
+  let config = cfgCache.get(cacheKey);
 
   if (!config) {
-    let presetPackageName = changelogPreset;
+    let presetPackageName = presetName;
 
     // https://github.com/npm/npm-package-arg#result-object
     const parsed = npa(presetPackageName, rootPath);
@@ -57,15 +67,15 @@ function getChangelogConfig(changelogPreset = "conventional-changelog-angular",
 
     // Maybe it doesn't need an implicit 'conventional-changelog-' prefix?
     try {
-      config = resolveConfigPromise(presetPackageName);
+      config = resolveConfigPromise(presetPackageName, presetConfig);
 
-      cfgCache.set(changelogPreset, config);
+      cfgCache.set(cacheKey, config);
 
       // early exit, yay
       return Promise.resolve(config);
     } catch (err) {
       log.verbose("getChangelogConfig", err.message);
-      log.info("getChangelogConfig", "Auto-prefixing conventional-changelog preset %j", changelogPreset);
+      log.info("getChangelogConfig", "Auto-prefixing conventional-changelog preset %j", presetName);
 
       // probably a deep shorthand subpath :P
       parsed.name = parsed.raw;
@@ -85,16 +95,16 @@ function getChangelogConfig(changelogPreset = "conventional-changelog-angular",
     }
 
     try {
-      config = resolveConfigPromise(presetPackageName);
+      config = resolveConfigPromise(presetPackageName, presetConfig);
 
-      cfgCache.set(changelogPreset, config);
+      cfgCache.set(cacheKey, config);
     } catch (err) {
       log.warn("getChangelogConfig", err.message);
 
       throw new ValidationError(
         "EPRESET",
-        `Unable to load conventional-changelog preset '${changelogPreset}'${
-          changelogPreset !== presetPackageName ? ` (${presetPackageName})` : ""
+        `Unable to load conventional-changelog preset '${presetName}'${
+          presetName !== presetPackageName ? ` (${presetPackageName})` : ""
         }`
       );
     }