Unable to import symbols exported from imported modules #18001
Description
I'm trying to use d3-dsv in a script run with --experimental-modules. When importing one of the symbols that d3-dsv exports from imported modules, I get:
$ npm install d3-dsv
$ echo "import { csvFormat } from 'd3-dsv'" > exp.mjs
$ node --experimental-modules exp.mjs
(node:29364) ExperimentalWarning: The ESM module loader is experimental.
SyntaxError: The requested module does not provide an export named 'csvFormat'
at ModuleJob._instantiate (internal/loader/ModuleJob.js:84:17)
at <anonymous>
This works with Babel:
$ node -r babel-register exp.mjs # OK
$ node -v
v9.3.0
A workaround is to import everything...
import d3 from 'd3-dsv';
d3.csvFormat([]);...but that's not backwards compatible
$ node -r babel-register exp.mjs
exp.mjs:9
_d3Dsv2.default.csvFormat([]);
^
TypeError: Cannot read property 'csvFormat' of undefined
at Object.<anonymous> (exp.mjs:2:4)
at Module._compile (module.js:660:30)
at loader (node_modules/babel-register/lib/node.js:144:5)
at Object.require.extensions.(anonymous function) [as .js] (node_modules/babel-register/lib/node.js:154:7)
at Module.load (module.js:573:32)
at tryModuleLoad (module.js:513:12)
at Function.Module._load (module.js:505:3)
at Function.Module.runMain (module.js:701:10)
at startup (bootstrap_node.js:194:16)
at bootstrap_node.js:618:3
Alternatively, importing the whole module fails and using property notation with --experimental-modules:
import * as d3 from 'd3-dsv';
d3.csvFormat([]);$ node --experimental-modules exp.mjs
(node:31199) ExperimentalWarning: The ESM module loader is experimental.
TypeError: d3.csvFormat is not a function
at exp.mjs:2:4
at ModuleJob.run (internal/loader/ModuleJob.js:96:14)
at <anonymous>