Incorrect number of tokens returned when string content is right before an escaped newline

[rcjsuen]

RUN echo "test" a''\
# a'b
echo "test2"

const lib = require("dockerfile-language-service");
const service = lib.DockerfileLanguageServiceFactory.createLanguageService();
const tokens = service.computeSemanticTokens(`RUN echo "test" a''\\\n# a'b\necho "test2"`);
console.log(tokens["data"].length);

50

There should be 9 tokens in total (length of 45) but it looks like we have found 10 instead.

1. RUN
2. echo
3. "test"
4. a
5. ''
6. \
7. # a'b
8. echo
9. "test2"