chore: Migrate to ferrum

BREAKING CHANGE

package.json

@@ -23,6 +23,7 @@
   "homepage": "https://github.com/adobe/helix-shared#readme",
   "dependencies": {
     "ajv": "6.10.1",
+    "ferrum": "^1.1.1",
     "fs-extra": "^8.0.0",
     "lodash": "^4.17.11",
     "object-hash": "^1.3.1",

src/HelixConfig.js

@@ -13,11 +13,12 @@
 const fs = require('fs-extra');
 const path = require('path');
 const YAML = require('yaml');
+const {
+  concat, uniq, foldl, pipe,
+} = require('ferrum');
 const Strain = require('./Strain.js');
 const Strains = require('./Strains.js');
 const ConfigValidator = require('./ConfigValidator.js');
-const { concat, uniq, foldl } = require('./sequence.js');
-const { pipe } = require('./functional.js');
 
 
 const HELIX_CONFIG = 'helix-config.yaml';

src/dom.js

@@ -21,15 +21,9 @@
 /* eslint-disable no-continue */
 const assert = require('assert');
 const {
-  withFunctionName, exec, pipe, identity,
-} = require('./functional');
-const {
-  Deepclone, deepclone, Equals, type,
-} = require('./types');
-const {
-  each, enumerate, reverse, takeUntilVal, extend1,
-  uniq, mapSort, join, map, all,
-} = require('./sequence.js');
+  withFunctionName, exec, pipe, identity, Deepclone, deepclone, Equals, type,
+  each, enumerate, reverse, takeUntilVal, extend1, uniq, mapSort, join, map, all,
+} = require('ferrum');
 
 /** Check whether the given type is the type of a dom node.  Note that, in
  * order to support various dom implementations, this function uses a heuristic

src/index.js

@@ -14,10 +14,6 @@ const HelixConfig = require('./HelixConfig.js');
 const Strain = require('./Strain.js');
 const Logger = require('./Logger.js');
 const utils = require('./utils.js');
-const sequence = require('./sequence.js');
-const functional = require('./functional.js');
-const op = require('./op.js');
-const types = require('./types.js');
 const string = require('./string.js');
 const dom = require('./dom.js');
 
@@ -26,10 +22,6 @@ module.exports = {
   HelixConfig,
   Strain,
   Logger,
-  functional,
-  op,
-  types,
-  sequence,
   string,
   dom,
   utils,