feat: adds isValidAddress (#1672)

* feat: adds isValidAddress

test/utils/isValidAddress.ts

@@ -0,0 +1,25 @@
+import { assert } from 'chai'
+
+import { isValidAddress } from 'xrpl-local'
+
+describe('isValidAddress', function () {
+  it('Validates valid classic address', function () {
+    const classic = 'r3rhWeE31Jt5sWmi4QiGLMZnY3ENgqw96W'
+    assert(isValidAddress(classic))
+  })
+
+  it('Does not validate invalid classic address', function () {
+    const classic = 'r3rhWeE31Jt5sWmi4QiGLMZnY3ENhqw96W'
+    assert(!isValidAddress(classic))
+  })
+
+  it('Validates valid X-Address', function () {
+    const xAddress = 'XV5sbjUmgPpvXv4ixFWZ5ptAYZ6PD28Sq49uo34VyjnmK5H'
+    assert(isValidAddress(xAddress))
+  })
+
+  it('Does not validate invalid X-Address', function () {
+    const xAddress = 'XV5sbjUmgPpvXv4ixFWZ5pfAYZ6PD28Sq49uo34VyjnmK5H'
+    assert(!isValidAddress(xAddress))
+  })
+})