title: Classpath not finding file
body: <p>I want to add a jar file to my classpath but I am getting the error <code>Unexpected error running Liquibase: 'C:\jar\migrations-0.0.1-SNAPSHOT.jar' does not exist</code>.Do I have to write the absolute path? Is there any way to use the path relatively to <code>ìndex.js</code>?</p>
  <pre><code>const POSTGRESSQL_DEFAULT_CONFIG = require('liquibase').POSTGRESSQL_DEFAULT_CONFIG;
  
  const myConfig = {
    ...POSTGRESSQL_DEFAULT_CONFIG,
    changeLogFile: 'db/master/changelog.xml',
    url: 'jdbc:postgresql://localhost:5432/saft-demo-dump?allowMultiQueries=TRUE',
    username: 'postgres',
    password: '*****',
    classpath:&quot;/jar/migrations-0.0.1-SNAPSHOT.jar&quot;
  }
  const instTs = new LiquibaseTS(myConfig);
  </code></pre>
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