Transact SQL lexer and linter

API

``javascript
try {
let parsed = require('ut-tsql-lexer').parse('select * FROM someTable');
parsed.lint.forEach(({
startLine,
startColumn,
endLine,
endColumn,
code,
message,
text
}) => {
// process lint warnings
});

parsed.tokens.forEach(line => {
line.forEach(({
type, // whitespace, newline, comment, literal, system, globaltemp,
// temp, variable, keyword, word, paren, operator
text,
location
}) => {
// process tokens of each line of source code
});
});
} catch ({message, location}) {
// process parse errors
}
`

Lint rules

- upppercase-keywords: Keywords must be in uppercase
- no-doublequotes: Must use [...] instead of "..."
- indent-size: Indentation must be multiple of 4
- no-trailing-whitespace: Trailing whitespace not allowed
- single-whitespace: Non indentation should be with single space
- newline-required: Newline required at end of file
- whitespace-around: Operator should be surrounded with single space
- whitespace-after: Operator should be followed by single space
- indent-step: Indentation step must not exceed 4
- indent-same: Lines starting with non-keyword must have same indentation
- indent-increase: Lines starting with non-keyword after lines starting with
keyword must increase indentation
- indent-after-begin`: Line after BEGIN must increase indentation with 4