add CI pipeline with lint, test, build

node_modules/ts-jest/dist/utils/sha1.js

@@ -0,0 +1,38 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.cache = void 0;
+exports.sha1 = sha1;
+const crypto_1 = require("crypto");
+/**
+ * @internal
+ */
+// stores hashes made out of only one argument being a string
+exports.cache = Object.create(null);
+/**
+ * @internal
+ */
+function sha1(...data) {
+    const canCache = data.length === 1 && typeof data[0] === 'string';
+    // caching
+    let cacheKey;
+    if (canCache) {
+        cacheKey = data[0];
+        if (cacheKey in exports.cache) {
+            return exports.cache[cacheKey];
+        }
+    }
+    // we use SHA1 because it's the fastest provided by node
+    // and we are not concerned about security here
+    const hash = (0, crypto_1.createHash)('sha1');
+    data.forEach((item) => {
+        if (typeof item === 'string')
+            hash.update(item, 'utf8');
+        else
+            hash.update(item);
+    });
+    const res = hash.digest('hex').toString();
+    if (canCache) {
+        exports.cache[cacheKey] = res;
+    }
+    return res;
+}