Integrate plugin, add related (failing) test

Author: doesdev

index.js

@@ -67,5 +67,16 @@ const analyze = (bundle, opts = {}, format = false) => {
 
 const formatted = (bndl, opts) => analyze(bndl, opts, true);
 
+const plugin = (opts = {}) => {
+  let log = opts.writeTo || (opts.stdout ? console.log : console.error);
+  return {
+    name: 'rollup-analyzer-plugin',
+    ongenerate: ({bundle}) => {
+      return formatted(bundle, opts).then(log)
+    }
+  }
+};
+
 exports.analyze = analyze;
 exports.formatted = formatted;
+exports.plugin = plugin;

module.js

@@ -64,3 +64,13 @@ export const analyze = (bundle, opts = {}, format = false) => {
 }
 
 export const formatted = (bndl, opts) => analyze(bndl, opts, true)
+
+export const plugin = (opts = {}) => {
+  let log = opts.writeTo || (opts.stdout ? console.log : console.error)
+  return {
+    name: 'rollup-analyzer-plugin',
+    ongenerate: ({bundle}) => {
+      return formatted(bundle, opts).then(log)
+    }
+  }
+}

test/index.js

@@ -2,14 +2,14 @@
 
 // setup
 import test from 'ava'
+import { analyze, formatted, plugin } from './../index'
 import { resolve, join } from 'path'
 import { rollup as rollupLatest } from 'rollup'
 import { rollup as rollup60 } from 'rollup60'
 import { rollup as rollup55 } from 'rollup55'
 import { rollup as rollup50 } from 'rollup50'
 import { rollup as rollup45 } from 'rollup45'
 import { rollup as rollup40 } from 'rollup40'
-import { analyze, formatted } from './../index'
 const fixtures = resolve(__dirname, 'fixtures')
 const baseOpts = {
   input: join(fixtures, 'bundle.js'),
@@ -19,6 +19,11 @@ const oldOpts = {
   entry: join(fixtures, 'bundle.js'),
   format: 'cjs'
 }
+const expectHeader = `
+-----------------------------
+Rollup File Analysis
+-----------------------------
+`.trim()
 
 // test against many versions of rollup
 const rollers = [
@@ -91,6 +96,17 @@ rollers.forEach(({rollup, version, opts}) => {
     assert.is(typeof results, 'string')
   })
 
+  let shouldFailPlugin = {latest: true, '0.60.x': true}
+  let pluginTest = shouldFailPlugin[version] ? test.failing : test
+  pluginTest(`${version}: plugin writes expected results`, async (assert) => {
+    let results
+    let writeTo = (r) => { results = r }
+    let rollOpts = Object.assign({plugins: [plugin({writeTo})]}, opts)
+    let bundle = await rollup(rollOpts)
+    await bundle.generate({format: 'cjs'})
+    assert.is(results.substr(0, expectHeader.length), expectHeader)
+  })
+
   test.failing(`${version}: tree shaking is accounted for`, async (assert) => {
     let bundle = await rollup(opts)
     let results = await analyze(bundle)

yarn.lock

@@ -1864,8 +1864,8 @@ p-finally@^1.0.0:
   resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
 
 p-limit@^1.1.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-1.2.0.tgz#0e92b6bedcb59f022c13d0f1949dc82d15909f1c"
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-1.3.0.tgz#b86bd5f0c25690911c7590fcbfc2010d54b3ccb8"
   dependencies:
     p-try "^1.0.0"