1 files changed, 57 insertions, 0 deletions
diff --git a/third_party/js/PKI.js/src/errors/ParameterError.ts b/third_party/js/PKI.js/src/errors/ParameterError.ts
new file mode 100644
index 0000000000..cf32fbd56a
--- /dev/null
+++ b/third_party/js/PKI.js/src/errors/ParameterError.ts
@@ -0,0 +1,57 @@
+import { EMPTY_STRING } from "../constants";
+import { ArgumentError } from "./ArgumentError";
+
+export class ParameterError extends TypeError {
+
+  public static readonly NAME = "ParameterError";
+
+  public static assert(target: string, params: any, ...fields: string[]): void;
+  public static assert(params: any, ...fields: string[]): void;
+  public static assert(...args: any[]): void {
+    let target: string | null = null;
+    let params: any;
+    let fields: string[];
+    if (typeof args[0] === "string") {
+      target = args[0];
+      params = args[1];
+      fields = args.slice(2);
+    } else {
+      params = args[0];
+      fields = args.slice(1);
+    }
+    ArgumentError.assert(params, "parameters", "object");
+    for (const field of fields) {
+      const value = params[field];
+      if (value === undefined || value === null) {
+        throw new ParameterError(field, target);
+      }
+    }
+  }
+
+  public static assertEmpty(value: unknown, name: string, target?: string): asserts value {
+    if (value === undefined || value === null) {
+      throw new ParameterError(name, target);
+    }
+  }
+
+  public override name: typeof ParameterError.NAME = ParameterError.NAME;
+
+  public field: string;
+  public target?: string;
+
+  constructor(field: string, target: string | null = null, message?: string) {
+    super();
+
+    this.field = field;
+    if (target) {
+      this.target = target;
+    }
+
+    if (message) {
+      this.message = message;
+    } else {
+      this.message = `Absent mandatory parameter '${field}' ${target ? ` in '${target}'` : EMPTY_STRING}`;
+    }
+  }
+
+}
+\ No newline at end of file