`traverse` dependency breaking change

[MartyJRE]

Steps to reproduce

Include a complex object containing symbols in the template, such as forever-agent.

Current Behavior

The traverse library introduced iteration over symbols in version 0.6.8. Previously, they only iterated over strings.
This now breaks during parsing when the template contains a symbol on the line

loopback-connector-rest/lib/template.js

Line 52 in 3d0ea7b

while (match = templates.exec(item)) {

. Calling RegExp.exec() on a symbol throws an error.

Expected Behavior

It's not clear to me what the expected behavior should be, but I think the type of the item should be checked, as the traverse library previously only provided strings.

Link to reproduction sandbox

https://github.com/MartyJRE/loopback-sandbox-traverse

Additional information

linux x64 16.13.1

loopback-sandbox@1.0.0 /home/martin/Documents/Code/loopback-sandbox-traverse
├── loopback-boot@3.3.1
├── loopback-component-explorer@6.5.1
├── loopback-connector-rest@5.0.0
├── loopback-datasource-juggler@5.0.6
├── loopback@3.28.0

Related Issues

I filed an issue with the traverse library as well, but I'm unsure whether they'll consider this a problem as for them it isn't neceserally a breaking change.

ljharb/js-traverse#5