[TINKERPOP-2332] JavaScript GLV: structure element toString() should internally call toString() - ASF JIRA

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Structure classes use String instance methods on properties that might not be strings.

For example, current implementation:

class Property {
  // ...

  toString() {
    return 'p[' + this.key + '->' + this.value.substr(0, 20) + ']';
  }
}

Should be:

class Property {
  // ...

  toString() {
    return 'p[' + this.key + '->' + this.value.toString().substr(0, 20) + ']';
  }
}

Plus checking on null/undefined value.

links to

GitHub Pull Request #1242