feat(core): expressive content replacement

mod-protocol · Dec 23, 2023 · aee0091 · aee0091
1 parent 7bc7ff6
commit aee0091
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Showing 4 changed files with 32 additions and 3 deletions.
diff --git a/.changeset/tasty-pets-marry.md b/.changeset/tasty-pets-marry.md
@@ -0,0 +1,5 @@
+---
+"@mod-protocol/core": minor
+---
+
+feat: expressive content replacement syntax via `mustache.js`
diff --git a/packages/core/package.json b/packages/core/package.json
@@ -17,6 +17,7 @@
     "@types/lodash.set": "^4.3.7",
     "@types/lodash.tonumber": "^4.0.7",
     "@types/lodash.tostring": "^4.1.7",
+    "@types/mustache": "^4.2.5",
     "@types/react": "^18.2.0",
     "@types/react-dom": "^18.2.0",
     "eslint": "^7.32.0",
@@ -33,6 +34,7 @@
     "lodash.mapvalues": "^4.6.0",
     "lodash.set": "^4.3.2",
     "lodash.tonumber": "^4.0.3",
-    "lodash.tostring": "^4.1.4"
+    "lodash.tostring": "^4.1.4",
+    "mustache": "^4.2.0"
   }
 }
diff --git a/packages/core/src/renderer.ts b/packages/core/src/renderer.ts
@@ -16,6 +16,12 @@ import {
   HTTPAction,
 } from "./manifest";
 import { Embed } from "./embeds";
+import Mustache from "mustache";
+
+// Prevent default HTML escaping behaviour
+Mustache.escape = function (value) {
+  return value;
+};
 
 export type ModElementRef<T> =
   | {
@@ -315,7 +321,18 @@ export interface ExitActionResolver {
 }
 
 function replaceInlineContext(target: string, context: any): string {
-  return target.replace(/{{([^{{}}]+)}}/g, (_, key) => get(context, key, ``));
+  const output = Mustache.render(target, {
+    ...context,
+    decimals: function () {
+      return function (text: string, render: (text: string) => string) {
+        var parts = text.split(" ");
+        var value = parseFloat(render(parts[0]));
+        var decimalPlaces = parseInt(render(parts[1]), 10);
+        return value.toFixed(decimalPlaces);
+      };
+    },
+  });
+  return output;
 }
 
 function matchesOp(value: string, op: Op, context: any): boolean {

diff --git a/yarn.lock b/yarn.lock
@@ -4255,6 +4255,11 @@
   resolved "https://registry.yarnpkg.com/@types/ms/-/ms-0.7.34.tgz#10964ba0dee6ac4cd462e2795b6bebd407303433"
   integrity sha512-nG96G3Wp6acyAgJqGasjODb+acrI7KltPiRxzHPXnP3NgI28bpQDRv53olbqGXbfcgF5aiiHmO3xpwEpS5Ld9g==
 
+"@types/mustache@^4.2.5":
+  version "4.2.5"
+  resolved "https://registry.yarnpkg.com/@types/mustache/-/mustache-4.2.5.tgz#9129f0d6857f976e00e171bbb3460e4b702f84ef"
+  integrity sha512-PLwiVvTBg59tGFL/8VpcGvqOu3L4OuveNvPi0EYbWchRdEVP++yRUXJPFl+CApKEq13017/4Nf7aQ5lTtHUNsA==
+
 "@types/node@*", "@types/node@>=12.12.47", "@types/node@>=13.7.0", "@types/node@^20.8.8":
   version "20.10.5"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-20.10.5.tgz#47ad460b514096b7ed63a1dae26fad0914ed3ab2"
@@ -12137,7 +12142,7 @@ murmurhash3js-revisited@^3.0.0:
   resolved "https://registry.yarnpkg.com/murmurhash3js-revisited/-/murmurhash3js-revisited-3.0.0.tgz#6bd36e25de8f73394222adc6e41fa3fac08a5869"
   integrity sha512-/sF3ee6zvScXMb1XFJ8gDsSnY+X8PbOyjIuBhtgis10W2Jx4ZjIhikUCIF9c4gpJxVnQIsPAFrSwTCuAjicP6g==
 
-mustache@^4.0.0:
+mustache@^4.0.0, mustache@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/mustache/-/mustache-4.2.0.tgz#e5892324d60a12ec9c2a73359edca52972bf6f64"
   integrity sha512-71ippSywq5Yb7/tVYyGbkBggbU8H3u5Rz56fH60jGFgr8uHwxs+aSKeqmluIVzM0m0kB7xQjKS6qPfd0b2ZoqQ==