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