--- /dev/null
+const Ajv = require("ajv")
+const ajv = new Ajv({allErrors: true})
+
+const schema = {
+ type: "object",
+ properties: {
+ foo: {type: "string"},
+ bar: {type: "number", maximum: 3},
+ },
+ required: ["foo", "bar"],
+ additionalProperties: false,
+}
+
+const validate = ajv.compile(schema)
+
+test({foo: "abc", bar: 2})
+test({foo: 2, bar: 4})
+
+function test(data) {
+ const valid = validate(data)
+ if (valid) console.log("Valid!")
+ else console.log("Invalid: " + ajv.errorsText(validate.errors))
+}