docs/standalone.md

@@ -12,7 +12,7 @@ This functionality in Ajv v7 supersedes deprecated package ajv-pack that can be
 
 ## Usage with CLI
 
-In most cases you would use this functionality via [ajv-cli](https://github.com/jessedc/ajv-cli) (>= 4.0.0) to generate module that exports validation function.
+In most cases you would use this functionality via [ajv-cli](https://github.com/ajv-validator/ajv-cli) (>= 4.0.0) to generate module that exports validation function.
 
 ```sh
 npm install -g ajv-cli
@@ -21,7 +21,7 @@ ajv compile -s schema.json -o validate_schema.js
 
 `validate_schema.js` will contain the module exporting validation function that can be bundled into your application.
 
-See [ajv-cli](https://github.com/jessedc/ajv-cli) docs for additional information.
+See [ajv-cli](https://github.com/ajv-validator/ajv-cli) docs for additional information.
 
 ## Usage from code
 

lib/vocabularies/applicator/contains.ts

@@ -63,13 +63,12 @@ const def: CodeKeywordDefinition = {
     const valid = gen.name("valid")
     if (max === undefined && min === 1) {
       validateItems(valid, () => gen.if(valid, () => gen.break()))
+    } else if (min === 0) {
+      gen.let(valid, true)
+      if (max !== undefined) gen.if(_`${data}.length > 0`, validateItemsWithCount)
     } else {
       gen.let(valid, false)
-      if (min === 0) {
-        gen.if(_`${data}.length > 0`, validateItemsWithCount, () => gen.assign(valid, true))
-      } else {
-        validateItemsWithCount()
-      }
+      validateItemsWithCount()
     }
     cxt.result(valid, () => cxt.reset())
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ajv",
-  "version": "8.8.0",
+  "version": "8.8.1",
   "description": "Another JSON Schema Validator",
   "main": "dist/ajv.js",
   "types": "dist/ajv.d.ts",

spec/issues/1819_mincontains.spec.ts

@@ -0,0 +1,19 @@
+import _Ajv from "../ajv2020"
+import * as assert from "assert"
+
+describe("`minContains: 0` without valid items (issue #1819)", () => {
+  const ajv = new _Ajv()
+
+  const schema = {
+    type: "array",
+    minContains: 0,
+    maxContains: 1,
+    contains: {type: "number"},
+  }
+
+  const validate = ajv.compile(schema)
+
+  it("no items valid", () => assert.strictEqual(validate(["foo"]), true))
+  it("1 item valid", () => assert.strictEqual(validate(["foo", 1]), true))
+  it("2 items invalid", () => assert.strictEqual(validate(["foo", 1, 2]), false))
+})