对于即将发布的Transcrypt Python to JS 编译器版本，添加了对 ES6 模块的支持。但是我无法让源映射在 Firefox 中工作，而在 Chrome 中它们可以完美地工作。我正在使用 Firefox Developer Edition 59.0b13（64 位） 我的问题是（Python）源文件没有显示在调试器的 Sources 窗格中。以下文件都在同一个目录中，由 node.js http-server 提供服务：
Python源码：
from itertools import chain
class SolarSystem:
planets = [list (chain (planet, (index + 1,))) for index, planet in enumerate ((
('Mercury', 'hot', 2240),
('Venus', 'sulphurous', 6052),
('Earth', 'fertile', 6378),
('Mars', 'reddish', 3397),
('Jupiter', 'stormy', 71492),
('Saturn', 'ringed', 60268),
('Uranus', 'cold', 25559),
('Neptune', 'very cold', 24766)
))]
lines = (
'{} is a {} planet',
'The radius of {} is {} km',
'{} is planet nr. {} counting from the sun'
)
def __init__ (self):
self.lineIndex = 0
def greet (self):
self.planet = self.planets [int (Math.random () * len (self.planets))]
document.getElementById ('greet') .innerHTML = 'Hello {}'.format (self.planet [0])
self.explain ()
def explain (self):
document.getElementById ('explain').innerHTML = (
self.lines [self.lineIndex] .format (self.planet [0], self.planet [self.lineIndex + 1])
)
self.lineIndex = (self.lineIndex + 1) % 3
solarSystem = SolarSystem ()
转成js：
// Transcrypt'ed from Python, 2018-03-30 16:23:19
import {__envir__, __nest__, __init__, __get__, __getcm__, __getsm__, py_metatype, object, __class__, __pragma__, __call__, __kwargtrans__, __globals__, __super__, property, __setProperty__, assert, __merge__, dir, setattr, getattr, hasattr, delattr, __in__, __specialattrib__, len, __i__, __k__, __t__, float, int, bool, py_typeof, issubclass, isinstance, callable, repr, chr, ord, max, min, round, __jsUsePyNext__, __pyUseJsNext__, py_iter, py_next, __PyIterator__, __JsIterator__, py_reversed, zip, range, any, all, sum, enumerate, copy, deepcopy, list, tuple, set, bytearray, bytes, str, dict, __jsmod__, __mod__, __pow__, __neg__, __matmul__, __mul__, __truediv__, __floordiv__, __add__, __sub__, __lshift__, __rshift__, __or__, __xor__, __and__, __eq__, __ne__, __lt__, __le__, __gt__, __ge__, __imatmul__, __ipow__, __ijsmod__, __imod__, __imul__, __idiv__, __iadd__, __isub__, __ilshift__, __irshift__, __ior__, __ixor__, __iand__, __getitem__, __setitem__, __getslice__, __setslice__, BaseException, Exception, IterableError, StopIteration, ValueError, KeyError, AssertionError, NotImplementedError, IndexError, AttributeError, py_TypeError, Warning, UserWarning, DeprecationWarning, RuntimeWarning, __sort__, sorted, map, filter, divmod, __Terminal__, __terminal__, print} from './org.transcrypt.__runtime__.js';
var __name__ = '__main__';
import {chain} from './itertools.js';
export var SolarSystem = __class__ ('SolarSystem', [object], {
__module__: __name__,
planets: (function () {
var __accu0__ = [];
for (var [index, planet] of enumerate (tuple ([tuple (['Mercury', 'hot', 2240]), tuple (['Venus', 'sulphurous', 6052]), tuple (['Earth', 'fertile', 6378]), tuple (['Mars', 'reddish', 3397]), tuple (['Jupiter', 'stormy', 71492]), tuple (['Saturn', 'ringed', 60268]), tuple (['Uranus', 'cold', 25559]), tuple (['Neptune', 'very cold', 24766])]))) {
__accu0__.append (list (chain (planet, tuple ([index + 1]))));
}
return __accu0__;
}) (),
lines: tuple (['{} is a {} planet', 'The radius of {} is {} km', '{} is planet nr. {} counting from the sun']),
get __init__ () {return __get__ (this, function (self) {
self.lineIndex = 0;
});},
get greet () {return __get__ (this, function (self) {
self.planet = self.planets [int (Math.random () * len (self.planets))];
document.getElementById ('greet').innerHTML = 'Hello {}'.format (self.planet [0]);
self.explain ();
});},
get explain () {return __get__ (this, function (self) {
document.getElementById ('explain').innerHTML = self.lines [self.lineIndex].format (self.planet [0], self.planet [self.lineIndex + 1]);
self.lineIndex = __mod__ (self.lineIndex + 1, 3);
});}
});
export var solarSystem = SolarSystem ();
//# sourceMappingURL=hello.map
和地图：
{
"version": 3,
"file": "hello.js",
"sources": [
"hello.py"
],
"mappings": "AAAA;AAAA;AAAA;AAAA;AAEA;AAAA;AAAA;AAAA;AAAA;AACA;AAAA;AAAA;AAAA;AAAA;AAWA;AAMA;AACA;AAAA;AAEA;AACA;AACA;AACA;AAAA;AAEA;AAEA;AAEA;AAAA;AAAA;AAEA;AAAA"
}
有人看到缺少什么吗？该页面在 Firefox 中看起来不错。只有地图不起作用。