Switch back to gray-matter for front-matter parsing.

package.json

@@ -106,6 +106,7 @@
     "dateformat": "^1.0.12",
     "deep-equal": "^1.0.1",
     "fuzzy": "^0.1.1",
+    "gray-matter": "^3.0.3",
     "history": "^2.1.2",
     "immutability-helper": "^2.0.0",
     "immutable": "^3.7.6",
@@ -121,9 +122,6 @@
     "moment": "^2.11.2",
     "node-sass": "^3.10.0",
     "normalize.css": "^4.2.0",
-    "preliminaries": "^1.3.0",
-    "preliminaries-parser-toml": "^1.3.0",
-    "preliminaries-parser-yaml": "^1.3.0",
     "prismjs": "^1.5.1",
     "prop-types": "^15.5.10",
     "react": "^15.1.0",
@@ -164,6 +162,7 @@
     "slate-edit-table": "^0.10.1",
     "slate-soft-break": "^0.3.0",
     "slug": "^0.9.1",
+    "toml": "^2.3.3",
     "unified": "^6.1.4",
     "unist-builder": "^1.0.2",
     "unist-util-visit-parents": "^1.1.1",

src/formats/frontmatter.js

@@ -1,28 +1,22 @@
-import preliminaries from 'preliminaries';
+import matter from 'gray-matter';
-import yamlParser from 'preliminaries-parser-yaml';
+import tomlEng from 'toml';
-import tomlParser from 'preliminaries-parser-toml';
 import YAML from './yaml';
 
-// Automatically register parsers
-preliminaries(true);
-yamlParser(true);
-tomlParser(true);
-
 function inferFrontmatterFormat(str) {
   const firstLine = str.substr(0, str.indexOf('\n')).trim();
   switch (firstLine) {
     case "---":
-      return { lang: "yaml", delims: "---" };
+      return { language: "yaml", delimiters: "---" };
     case "+++":
-      return { lang: "toml", delims: "+++" };
+      return { language: "toml", delimiters: "+++", engines: { toml: tomlEng.parse.bind(tomlEng) } };
     case "{":
-      return { lang: "json", delims: ["{", "}"] };
+      return { language: "json", delimiters: ["{", "}"] };
   }
 }
 
 export default class Frontmatter {
   fromFile(content) {
-    const result = preliminaries.parse(content, inferFrontmatterFormat(content));
+    const result = matter(content, inferFrontmatterFormat(content));
     const data = result.data;
     data.body = result.content;
     return data;
@@ -45,6 +39,6 @@ export default class Frontmatter {
         return new YAML().toFile(metadata, sortedKeys);
       },
     };
-    return preliminaries.stringify(body, meta, { lang: "yaml", delims: "---", parser });
+    return matter.stringify(body, meta, { language: "yaml", delimiters: "---", engines: { yaml: parser } });
   }
 }

yarn.lock

@@ -3513,6 +3513,14 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.4:
   version "4.1.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
+gray-matter@^3.0.3:
+  version "3.0.3"
+  resolved "https://registry.yarnpkg.com/gray-matter/-/gray-matter-3.0.3.tgz#0451a7eacdcb4f13fcbe12b14725422bc86b1030"
+  dependencies:
+    js-yaml "^3.8.1"
+    kind-of "^5.0.0"
+    strip-bom-string "^1.0.0"
+
 growly@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081"
@@ -4809,6 +4817,10 @@ kind-of@^4.0.0:
   dependencies:
     is-buffer "^1.1.5"
 
+kind-of@^5.0.0:
+  version "5.0.2"
+  resolved "https://registry.yarnpkg.com/kind-of/-/kind-of-5.0.2.tgz#f57bec933d9a2209ffa96c5c08343607b7035fda"
+
 known-css-properties@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/known-css-properties/-/known-css-properties-0.2.0.tgz#899c94be368e55b42d7db8d5be7d73a4a4a41454"
@@ -6754,23 +6766,6 @@ postcss@^6.0.1, postcss@^6.0.2:
     source-map "^0.5.6"
     supports-color "^4.2.1"
 
-preliminaries-parser-toml@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/preliminaries-parser-toml/-/preliminaries-parser-toml-1.3.0.tgz#e62203c45d1c5bf5908b02fb8830336b59a0ebe6"
-  dependencies:
-    toml "^2.3.2"
-    toml-js "0.0.8"
-
-preliminaries-parser-yaml@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/preliminaries-parser-yaml/-/preliminaries-parser-yaml-1.3.0.tgz#72b5c69c930e322b07ed78a6696d4bf61de73585"
-  dependencies:
-    js-yaml "^3.8.1"
-
-preliminaries@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/preliminaries/-/preliminaries-1.3.0.tgz#da1602e704c36da5dde59b7f4aea2a5380ee6357"
-
 prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
@@ -8257,6 +8252,10 @@ strip-ansi@^4.0.0:
   dependencies:
     ansi-regex "^3.0.0"
 
+strip-bom-string@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/strip-bom-string/-/strip-bom-string-1.0.0.tgz#e5211e9224369fbb81d633a2f00044dc8cedad92"
+
 strip-bom@3.0.0, strip-bom@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-3.0.0.tgz#2334c18e9c759f7bdd56fdef7e9ae3d588e68ed3"
@@ -8651,11 +8650,7 @@ to-fast-properties@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/to-fast-properties/-/to-fast-properties-1.0.3.tgz#b83571fa4d8c25b82e231b06e3a3055de4ca1a47"
 
-toml-js@0.0.8:
+toml@^2.3.3:
-  version "0.0.8"
-  resolved "https://registry.yarnpkg.com/toml-js/-/toml-js-0.0.8.tgz#648ea6f1a4d63b19c0bb30b8ed03e40d09473b0a"
-
-toml@^2.3.2:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/toml/-/toml-2.3.3.tgz#8d683d729577cb286231dfc7a8affe58d31728fb"