tree.ts

libraries/deno-commons-mod.ts

@@ -105,6 +105,25 @@ export function isOn(val: string | undefined | null): boolean {
         lowerVal === "true";
 }
 
+export function isUndefined(val: any): boolean {
+    return typeof val === "undefined";
+}
+
+export function isUndefinedOrNull(val: any): boolean {
+    return isUndefined(val) || (val === null);
+}
+
+export function parseIntVal(val: any, defaultVal: number): number {
+    if (isUndefinedOrNull(val)) {
+        return defaultVal;
+    }
+    const parsedVal = parseInt(val, 10);
+    if (isNaN(parsedVal)) {
+        return defaultVal;
+    }
+    return parsedVal;
+}
+
 export function getEnv(envKey: string): string | null {
     const homeDir = getHomeDir();
     if ((homeDir !== null) && envKey) {