Whitespace-induced bug

[ralt]

A simple reproducer:

const fs = require('fs');

const acorn = require('./node_modules/acorn/dist/acorn_loose.js');
const escodegen = require('escodegen');

console.log(escodegen.generate(acorn.parse_dammit(fs.readFileSync('foo.js'))));

Where foo.js is this file:

return new Foo({
    value: [
    new Foo({
    })]
})

It renders like this:

return new Foo({
    value: [],
    new,
    Foo({}) {
        ;
    }
});

Note that with this in foo.js:

return new Foo({
    value: [
        new Foo({
    })]
})

the bug does not occur. (Note the 2nd new Foo() indentation.)

[marijnh]

The loose parser treats indentation as significant, so this is the expected behavior, What you should probably do is always try a regular parse first, and only when that fails, fall back on the loose parser. See also #199

[ralt]

Ok, thanks!