Kai Cataldo bbce2b3807 Remove comment attachment (babel/babel-eslint#736)
* Remove comment attachment

* Simplify error messaging in tests
2019-01-11 12:23:34 -05:00

41 lines
1.2 KiB
JavaScript

"use strict";
module.exports = function(ast) {
ast.type = "Program";
ast.sourceType = ast.program.sourceType;
ast.directives = ast.program.directives;
ast.body = ast.program.body;
delete ast.program;
if (ast.comments.length) {
const lastComment = ast.comments[ast.comments.length - 1];
if (!ast.tokens.length) {
// if no tokens, the program starts at the end of the last comment
ast.start = lastComment.end;
ast.loc.start.line = lastComment.loc.end.line;
ast.loc.start.column = lastComment.loc.end.column;
} else {
const lastToken = ast.tokens[ast.tokens.length - 1];
if (lastComment.end > lastToken.end) {
// If there is a comment after the last token, the program ends at the
// last token and not the comment
ast.range[1] = lastToken.end;
ast.loc.end.line = lastToken.loc.end.line;
ast.loc.end.column = lastToken.loc.end.column;
}
}
} else {
if (!ast.tokens.length) {
ast.loc.start.line = 1;
ast.loc.end.line = 1;
}
}
if (ast.body && ast.body.length > 0) {
ast.loc.start.line = ast.body[0].loc.start.line;
ast.range[0] = ast.body[0].start;
}
};