Fixed a problem where the return value of tokenGetAll is represented as an array of AST Strings, but actually returns a string.

[ytetsuro]

Example

const engine = new PHPParser.Engine({
      parser: {
        extractDoc: true,
      },
      lexer: {
        all_tokens: true,
      },
    });

const tokens: (string|string[])[] = engine.tokenGetAll('<?php echo "hello";'); // error

Expected

No error.

Actual

I happen error following.

Type 'String[]' is not assignable to type 'string[]'.

The return value of tokenGetAll is represented in the doc comment as an array of AST's String class, but it is actually an array of strings.

[coveralls]

Coverage remained the same at 96.142% when pulling 0600e4c on ytetsuro:fix/ASTStringToString into 1471870 on glayzzle:master.

[ichiriac]

👍 thanks @ytetsuro