Remove canonical field from blog post (#367)

We don't really use it for blog post

Author: chenglou

_blogposts/2020-11-17-editor-support-custom-operators-and-more.mdx

@@ -6,7 +6,6 @@ badge: roadmap
 title: "Editor Support, Custom Operators and More"
 description: |
   Update on what we're doing around the end of 2020 and early next year.
-canonical: https://rescript-lang.org/blog/rescript-the-road-ahead
 ---
 
 import Video from "src/components/Video"

_blogposts/2020-11-26-editor-support-release-1-0.mdx

@@ -7,7 +7,6 @@ badge: release
 title: "Editor Plugin for VSCode and Vim Officially Released!"
 description: |
   Type hints, jump to definition, error diagnostics, and more.
-canonical: https://rescript-lang.org/blog/editor-support-release-1-0
 ---
 
 

pages/blogpost-guide.mdx

@@ -48,7 +48,6 @@ title: Bloomberg announces BuckleScript 1.0
 description: |
   some multiline
   description
-canonical: https://rescript-lang.org/blog/2017/10/01/announcing-1-0
 ---
 ```
 
@@ -64,8 +63,6 @@ canonical: https://rescript-lang.org/blog/2017/10/01/announcing-1-0
 - `title`: The title of the article (h1 headline)
 - `description`: A description, which will be shown in the Featured blog post
   in the blog overview, and also as an introductory text in the blog article
-- `canonical`: This is used to point to a canonical url (mostly for refering to
-  the original source of a post, in case it is duplicated content)
 
 > **For Maintainers:** The implementation for the frontmatter logic can be found in the
 `common/BlogFrontmatter.res` module.

src/BlogArticle.mjs

@@ -127,7 +127,6 @@ function $$default(props) {
   var content;
   if (fm.TAG === /* Ok */0) {
     var match = fm._0;
-    var canonical = match.canonical;
     var description = match.description;
     var title = match.title;
     var tmp = {
@@ -138,10 +137,6 @@ function $$default(props) {
     if (tmp$1 !== undefined) {
       tmp.description = tmp$1;
     }
-    var tmp$2 = canonical === null ? undefined : Caml_option.some(canonical);
-    if (tmp$2 !== undefined) {
-      tmp.canonical = tmp$2;
-    }
     content = React.createElement("div", {
           className: "w-full"
         }, React.createElement(Meta.make, tmp), React.createElement("div", {
@@ -157,13 +152,7 @@ function $$default(props) {
               className: "flex justify-center"
             }, React.createElement("div", {
                   className: "max-w-740 w-full"
-                }, archivedNote, children, canonical !== null ? React.createElement("div", {
-                        className: "mt-12 text-14"
-                      }, "This article was originally released on ", React.createElement("a", {
-                            href: canonical,
-                            rel: "noopener noreferrer",
-                            target: "_blank"
-                          }, canonical)) : null, React.createElement("div", {
+                }, archivedNote, children, React.createElement("div", {
                       className: "mt-12"
                     }, React.createElement(BlogArticle$Line, {}), React.createElement("div", {
                           className: "pt-20 flex flex-col items-center"

src/BlogArticle.res

@@ -153,12 +153,11 @@ let default = (props: props) => {
     : React.null
 
   let content = switch fm {
-  | Ok({date, author, co_authors, title, description, canonical, articleImg, previewImg}) =>
+  | Ok({date, author, co_authors, title, description, articleImg, previewImg}) =>
     <div className="w-full">
       <Meta
         title={title ++ " | ReScript Blog"}
         description=?{description->Js.Null.toOption}
-        canonical=?{canonical->Js.Null.toOption}
         ogImage={previewImg->Js.Null.toOption->Belt.Option.getWithDefault(Blog.defaultPreviewImg)}
       />
       <div className="mb-10 md:mb-20">
@@ -175,16 +174,6 @@ let default = (props: props) => {
         <div className="max-w-740 w-full">
           archivedNote
           children
-          {switch canonical->Js.Null.toOption {
-          | Some(canonical) =>
-            <div className="mt-12 text-14">
-              {React.string("This article was originally released on ")}
-              <a href=canonical target="_blank" rel="noopener noreferrer">
-                {React.string(canonical)}
-              </a>
-            </div>
-          | None => React.null
-          }}
           <div className="mt-12">
             <Line />
             <div className="pt-20 flex flex-col items-center">

src/common/BlogFrontmatter.mjs

@@ -155,10 +155,7 @@ function decode(json) {
                 }), json)),
       description: Json_decode.nullable((function (param) {
               return Json_decode.field("description", Json_decode.string, param);
-            }), json),
-      canonical: Js_null.fromOption(Json_decode.optional((function (param) {
-                  return Json_decode.field("canonical", Json_decode.string, param);
-                }), json))
+            }), json)
     };
   }
   catch (raw_str){

src/common/BlogFrontmatter.res

@@ -90,7 +90,6 @@ type t = {
   title: string,
   badge: Js.null<Badge.t>,
   description: Js.null<string>,
-  canonical: Js.null<string>,
 }
 
 let decodeBadge = (str: string): Badge.t =>
@@ -133,7 +132,6 @@ let decode = (json: Js.Json.t): result<t, string> => {
     articleImg: json->optional(field("articleImg", string), _)->Js.Null.fromOption,
     title: json->field("title", string, _),
     description: json->nullable(field("description", string), _),
-    canonical: json->optional(field("canonical", string), _)->Js.Null.fromOption,
   } {
   | fm => Ok(fm)
   | exception DecodeError(str) => Error(str)