HTML files that should be passed through unmodified are being duplicated to directory + index.html

[gvwilson]

Describe the bug

• Our site has some top-level files (e.g., authors.md and index.html) and some documentation in docs/*.html that is generated using JSDoc.
• We want files like index.html processed as templates, but want everything in docs/ copied without modification.
• We're unable to get Eleventy to do this: the closest we can get gives us _site/docs/ABC.html (a perfect copy of docs/ABC.html, as desired) and also _site/docs/ABC/index.html (also a perfect copy of docs/ABC.html, which we don't want).

To Reproduce

./.eleventy.js configuration file

const pluginRss = require('@11ty/eleventy-plugin-rss')
const pluginSass = require('eleventy-plugin-sass')

module.exports = function(eleventyConfig) {
  eleventyConfig.addPlugin(pluginRss)
  eleventyConfig.addPlugin(pluginSass)

  eleventyConfig.addPassthroughCopy('dist')
  eleventyConfig.addPassthroughCopy('docs')

  eleventyConfig.setTemplateFormats([
    'css',
    'html',
    'jpg',
    'md',
    'njk',
    'png',
    'svg'
  ])

  return {
    passthroughFileCopy: true
  }
}

./.eleventyignore file (probably not relevant, but hey...)

README.md
old-examples

Excerpt from ./package.json:

  "scripts": {
    "build-dev": "webpack --config webpack.config.js",
    "build": "webpack --config webpack.production.config.js",
    "watch": "webpack --config webpack.config.js --watch",
    "check": "node bin/check_translations.js",
    "coverage": "nyc --reporter=html --reporter=text mocha",
    "data": "data/generate.js data/*.csv",
    "docs": "jsdoc -c .jsdocrc --destination docs --readme README.md libs/*.js",
    "lint": "eslint index.js libs/*.js blocks/*.js",
    "serve": "npx @11ty/eleventy --serve",
    "site": "npx @11ty/eleventy",
    "test": "mocha"
  }

• Code documentation is generated using npm run docs to trigger JSDoc.
• Website is built or served using npm run site or npm run serve respectively (same behavior).

Expected behavior

• Should only have _site/docs/ABC.html (perfect copy of docs/ABC.html).
• Should not have _site/docs/ABC/index.html.

Environment:

• OS and Version: MacOS 10.13.6 (High Sierra)
• Node 13.9.0
• Eleventy 0.11.0

[leepowelldev]

Same issue - is there anyway to prevent the behaviour of directory + index.html ? and just build templates to their respective .html files?