feat: prep helper lib

Author: alexsasharegan

.gitignore

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+node_modules/
+.*
+!.gitignore

LICENSE

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+
+The MIT License (MIT)
+
+Copyright (c) 2016-2017 - BootstrapVue
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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 # bootstrap-vue-helper-json
+
+Bootstrap-Vue/Vetur intellisense reference definitions.

element-tags.json

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+{
+  "name": "bootstrap-vue-helper-json",
+  "version": "1.0.0-beta.7",
+  "description": "Bootstrap-Vue/Vetur intellisense reference definitions.",
+  "main": "element-tags.json",
+  "scripts": {
+    "build": "scripts/generate-vetur-helpers.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/bootstrap-vue/bootstrap-vue-helper-json.git"
+  },
+  "keywords": ["bootstrap", "bootstrap-vue", "plugin", "vetur"],
+  "author": "Alex Regan <alex.joseph.regan@gmail.com> (https://github.com/alexsasharegan)",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/bootstrap-vue/bootstrap-vue-helper-json/issues"
+  },
+  "homepage": "https://github.com/bootstrap-vue/bootstrap-vue-helper-json#readme",
+  "devDependencies": {
+    "bootstrap-vue": "^1.0.0-beta.7",
+    "lodash": "^4.17.4"
+  }
+}

package-lock.json

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+#!/usr/bin/env node
+const { resolve } = require("path")
+const { readFileSync, existsSync, writeFile } = require("fs")
+const { kebabCase } = require("lodash")
+const BV = require("bootstrap-vue/dist/bootstrap-vue")
+const cache = Object.create(null)
+cache["element-tags"] = {}
+
+class JsonSet extends Set {
+  toJSON() {
+    return Array.from(this)
+  }
+}
+
+function $writeFile(path, data, options) {
+  return new Promise((resolve, reject) => {
+    writeFile(path, data, options, err => {
+      err ? reject(err) : resolve()
+    })
+  })
+}
+
+function cacheLibMeta() {
+  BV.install({
+    component(name, def) {
+      const tagName = kebabCase(name)
+      const metapath = resolve(
+        require.resolve("bootstrap-vue"),
+        "/docs/components/",
+        tagName
+          .split("-")
+          .filter(s => s !== "b")
+          .join("-"),
+        "meta.json"
+      )
+      let metaDoc = {}
+      if (existsSync(metapath)) {
+        metaDoc = JSON.parse(readFileSync(metapath))
+      }
+      cache["element-tags"][tagName] = Object.keys(def.props || {}).reduce(
+        (meta, prop) => {
+          meta.attributes.add(kebabCase(prop))
+          meta.description = metaDoc.description || `Bootstrap-Vue component: <${tagName}>`
+
+          if (metaDoc.components) {
+            metaDoc.components.map(name => meta.subtags.add(kebabCase(name)))
+          }
+          if (metaDoc.events) {
+            metaDoc.events.map(e => meta.attributes.add(e.event))
+          }
+
+          return meta
+        },
+        { attributes: new JsonSet(), subtags: new JsonSet(), description: "" }
+      )
+    },
+    directive(name, def) {} // noop for now
+  })
+}
+
+function main() {
+  cacheLibMeta()
+  for (const basename in cache) {
+    $writeFile(resolve(__dirname, "..", `${basename}.json`), JSON.stringify(cache[basename], null, 2)).catch(
+      console.error
+    )
+  }
+}
+
+main()