1 files changed, 31 insertions, 0 deletions
diff --git a/packages/gitbook/src/parse/validateConfig.js b/packages/gitbook/src/parse/validateConfig.js
new file mode 100644
index 0000000..e766fae
--- /dev/null
+++ b/packages/gitbook/src/parse/validateConfig.js
@@ -0,0 +1,31 @@
+const jsonschema = require('jsonschema');
+const jsonSchemaDefaults = require('json-schema-defaults');
+
+const schema = require('../constants/configSchema');
+const error = require('../utils/error');
+const mergeDefaults = require('../utils/mergeDefaults');
+
+/**
+    Validate a book.json content
+    And return a mix with the default value
+
+    @param {Object} bookJson
+    @return {Object}
+*/
+function validateConfig(bookJson) {
+    const v = new jsonschema.Validator();
+    const result = v.validate(bookJson, schema, {
+        propertyName: 'config'
+    });
+
+    // Throw error
+    if (result.errors.length > 0) {
+        throw new error.ConfigurationError(new Error(result.errors[0].stack));
+    }
+
+    // Insert default values
+    const defaults = jsonSchemaDefaults(schema);
+    return mergeDefaults(bookJson, defaults);
+}
+
+module.exports = validateConfig;