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backend/node_modules/@fastify/ajv-compiler/lib/validator-compiler.js

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+'use strict'
+
+const Ajv = require('ajv').default
+const AjvJTD = require('ajv/dist/jtd')
+
+const defaultAjvOptions = require('./default-ajv-options')
+
+class ValidatorCompiler {
+  constructor (externalSchemas, options) {
+    // This instance of Ajv is private
+    // it should not be customized or used
+    if (options.mode === 'JTD') {
+      this.ajv = new AjvJTD(Object.assign({}, defaultAjvOptions, options.customOptions))
+    } else {
+      this.ajv = new Ajv(Object.assign({}, defaultAjvOptions, options.customOptions))
+    }
+
+    let addFormatPlugin = true
+    if (options.plugins && options.plugins.length > 0) {
+      for (const plugin of options.plugins) {
+        if (Array.isArray(plugin)) {
+          addFormatPlugin = addFormatPlugin && plugin[0].name !== 'formatsPlugin'
+          plugin[0](this.ajv, plugin[1])
+        } else {
+          addFormatPlugin = addFormatPlugin && plugin.name !== 'formatsPlugin'
+          plugin(this.ajv)
+        }
+      }
+    }
+
+    if (addFormatPlugin) {
+      require('ajv-formats')(this.ajv)
+    }
+
+    options.onCreate?.(this.ajv)
+
+    const sourceSchemas = Object.values(externalSchemas)
+    for (const extSchema of sourceSchemas) {
+      this.ajv.addSchema(extSchema)
+    }
+  }
+
+  buildValidatorFunction ({ schema/*, method, url, httpPart */ }) {
+    // Ajv does not support compiling two schemas with the same
+    // id inside the same instance. Therefore if we have already
+    // compiled the schema with the given id, we just return it.
+    if (schema.$id) {
+      const stored = this.ajv.getSchema(schema.$id)
+      if (stored) {
+        return stored
+      }
+    }
+
+    return this.ajv.compile(schema)
+  }
+}
+
+module.exports = ValidatorCompiler