Source maps mapping looks wrong when using Webpack #498

const SourceMapConsumer = require("source-map").SourceMapConsumer;
const fs = require("fs");

const SOURCEMAP_ABSOUTE_PATH = "/path/to/test-source-maps/dist/bundle.js.map";
const ORIGINAL_ABSOLUTE_PATH = "/path/to/test-source-maps/src/index.ts";
const GENERATED_ABSOLUTE_PATH = "/path/to/test-source-maps/dist/bundle.js";
const ORIGINAL_LINE = 11;

let json = JSON.parse(fs.readFileSync(SOURCEMAP_ABSOUTE_PATH).toString());

SourceMapConsumer.with(json, null, (consumer) => {
  console.log(consumer.sources);

  const generated = consumer.generatedPositionFor({
    source: ORIGINAL_ABSOLUTE_PATH,
    line: ORIGINAL_LINE,
    column: 0,
  });
  console.log(generated);

  const original = consumer.originalPositionFor({
    line: generated.line,
    column: generated.column,
  });
  console.log(original);

  assert(original.line === ORIGINAL_LINE); // <------------ This assertion fails!!!
});