Initial commit

node_modules/knex/lib/knex-builder/internal/config-resolver.js

@@ -0,0 +1,57 @@
+const Client = require('../../client');
+const { SUPPORTED_CLIENTS } = require('../../constants');
+
+const parseConnection = require('./parse-connection');
+const { getDialectByNameOrAlias } = require('../../dialects');
+
+function resolveConfig(config) {
+  let Dialect;
+  let resolvedConfig;
+
+  // If config is a string, try to parse it
+  const parsedConfig =
+    typeof config === 'string'
+      ? Object.assign(parseConnection(config), arguments[2])
+      : config;
+
+  // If user provided no relevant parameters, use generic client
+  if (
+    arguments.length === 0 ||
+    (!parsedConfig.client && !parsedConfig.dialect)
+  ) {
+    Dialect = Client;
+  }
+  // If user provided Client constructor as a parameter, use it
+  else if (typeof parsedConfig.client === 'function') {
+    Dialect = parsedConfig.client;
+  }
+  // If neither applies, let's assume user specified name of a client or dialect as a string
+  else {
+    const clientName = parsedConfig.client || parsedConfig.dialect;
+    if (!SUPPORTED_CLIENTS.includes(clientName)) {
+      throw new Error(
+        `knex: Unknown configuration option 'client' value ${clientName}. Note that it is case-sensitive, check documentation for supported values.`
+      );
+    }
+
+    Dialect = getDialectByNameOrAlias(clientName);
+  }
+
+  // If config connection parameter is passed as string, try to parse it
+  if (typeof parsedConfig.connection === 'string') {
+    resolvedConfig = Object.assign({}, parsedConfig, {
+      connection: parseConnection(parsedConfig.connection).connection,
+    });
+  } else {
+    resolvedConfig = Object.assign({}, parsedConfig);
+  }
+
+  return {
+    resolvedConfig,
+    Dialect,
+  };
+}
+
+module.exports = {
+  resolveConfig,
+};