Fixed build/pack steps to be more predictable

lib/main.js

@@ -0,0 +1,135 @@
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const core = __importStar(require("@actions/core"));
+const github = __importStar(require("@actions/github"));
+const yaml = __importStar(require("js-yaml"));
+const minimatch_1 = require("minimatch");
+function run() {
+    return __awaiter(this, void 0, void 0, function* () {
+        try {
+            const token = core.getInput('repo-token', { required: true });
+            const configPath = core.getInput('configuration-path', { required: true });
+            const prNumber = getPrNumber();
+            if (!prNumber) {
+                console.log('Could not get pull request number from context, exiting');
+                return;
+            }
+            const client = new github.GitHub(token);
+            core.debug(`fetching changed files for pr #${prNumber}`);
+            const changedFiles = yield getChangedFiles(client, prNumber);
+            const labelGlobs = yield getLabelGlobs(client, configPath);
+            const labels = [];
+            for (const [label, globs] of labelGlobs.entries()) {
+                core.debug(`processing ${label}`);
+                if (checkGlobs(changedFiles, globs)) {
+                    labels.push(label);
+                }
+            }
+            if (labels.length > 0) {
+                yield addLabels(client, prNumber, labels);
+            }
+        }
+        catch (error) {
+            core.error(error);
+            core.setFailed(error.message);
+        }
+    });
+}
+function getPrNumber() {
+    const pullRequest = github.context.payload.pull_request;
+    if (!pullRequest) {
+        return undefined;
+    }
+    return pullRequest.number;
+}
+function getChangedFiles(client, prNumber) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const listFilesResponse = yield client.pulls.listFiles({
+            owner: github.context.repo.owner,
+            repo: github.context.repo.repo,
+            pull_number: prNumber
+        });
+        const changedFiles = listFilesResponse.data.map(f => f.filename);
+        core.debug('found changed files:');
+        for (const file of changedFiles) {
+            core.debug('  ' + file);
+        }
+        return changedFiles;
+    });
+}
+function getLabelGlobs(client, configurationPath) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const configurationContent = yield fetchContent(client, configurationPath);
+        // loads (hopefully) a `{[label:string]: string | string[]}`, but is `any`:
+        const configObject = yaml.safeLoad(configurationContent);
+        // transform `any` => `Map<string,string[]>` or throw if yaml is malformed:
+        return getLabelGlobMapFromObject(configObject);
+    });
+}
+function fetchContent(client, repoPath) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const response = yield client.repos.getContents({
+            owner: github.context.repo.owner,
+            repo: github.context.repo.repo,
+            path: repoPath,
+            ref: github.context.sha
+        });
+        return Buffer.from(response.data.content, response.data.encoding).toString();
+    });
+}
+function getLabelGlobMapFromObject(configObject) {
+    const labelGlobs = new Map();
+    for (const label in configObject) {
+        if (typeof configObject[label] === 'string') {
+            labelGlobs.set(label, [configObject[label]]);
+        }
+        else if (configObject[label] instanceof Array) {
+            labelGlobs.set(label, configObject[label]);
+        }
+        else {
+            throw Error(`found unexpected type for label ${label} (should be string or array of globs)`);
+        }
+    }
+    return labelGlobs;
+}
+function checkGlobs(changedFiles, globs) {
+    for (const glob of globs) {
+        core.debug(` checking pattern ${glob}`);
+        const matcher = new minimatch_1.Minimatch(glob);
+        for (const changedFile of changedFiles) {
+            core.debug(` - ${changedFile}`);
+            if (matcher.match(changedFile)) {
+                core.debug(` ${changedFile} matches`);
+                return true;
+            }
+        }
+    }
+    return false;
+}
+function addLabels(client, prNumber, labels) {
+    return __awaiter(this, void 0, void 0, function* () {
+        yield client.issues.addLabels({
+            owner: github.context.repo.owner,
+            repo: github.context.repo.repo,
+            issue_number: prNumber,
+            labels: labels
+        });
+    });
+}
+run();

package.json

@@ -2,7 +2,7 @@
   "name": "labeler",
   "version": "3.0.0",
   "description": "Labels pull requests by files altered",
-  "main": "dist/index.js",
+  "main": "lib/main.js",
   "scripts": {
     "build": "tsc && ncc build",
     "format": "prettier --write **/*.ts",

tsconfig.json

@@ -11,7 +11,7 @@
     // "declarationMap": true,                /* Generates a sourcemap for each corresponding '.d.ts' file. */
     // "sourceMap": true,                     /* Generates corresponding '.map' file. */
     // "outFile": "./",                       /* Concatenate and emit output to single file. */
-    "outDir": "./dist",                       /* Redirect output structure to the directory. */
+    "outDir": "./lib",                       /* Redirect output structure to the directory. */
     "rootDir": "./src",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
     // "composite": true,                     /* Enable project compilation */
     // "tsBuildInfoFile": "./",               /* Specify file to store incremental compilation information */