recommend topojson-client (#239)

Author: mbostock

bin/resolve-dependencies

@@ -70,6 +70,10 @@ const mains = ["unpkg", "jsdelivr", "browser", "main"];
     const package = await resolve("apache-arrow@4");
     console.log(`export const arrow = dependency("${package.name}", "${package.version}", "${package.export}");`);
   }
+  {
+    const package = await resolve("topojson-client");
+    console.log(`export const topojson = dependency("${package.name}", "${package.version}", "${package.export}");`);
+  }
 })();
 
 async function resolve(specifier) {

src/dependencies.js

@@ -15,3 +15,4 @@ export const vega = dependency("vega", "5.20.2", "build/vega.min.js");
 export const vegalite = dependency("vega-lite", "5.1.0", "build/vega-lite.min.js");
 export const vegaliteApi = dependency("vega-lite-api", "5.0.0", "build/vega-lite-api.min.js");
 export const arrow = dependency("apache-arrow", "4.0.1", "Arrow.es2015.min.js");
+export const topojson = dependency("topojson-client", "3.1.0", "dist/topojson-client.min.js");

src/library.js

@@ -15,7 +15,7 @@ import svg from "./svg.js";
 import tex from "./tex.js";
 import vegalite from "./vegalite.js";
 import width from "./width.js";
-import {arrow, d3, graphviz, htl, inputs, lodash, plot} from "./dependencies.js";
+import {arrow, d3, graphviz, htl, inputs, lodash, plot, topojson} from "./dependencies.js";
 
 export default Object.assign(function Library(resolver) {
   const require = requirer(resolver);
@@ -38,6 +38,7 @@ export default Object.assign(function Library(resolver) {
     resolve: () => resolve,
     svg: () => svg,
     tex: () => tex(require),
+    topojson: () => require(topojson.resolve()),
     vl: () => vegalite(require),
     width,
 

test/index-test.js

@@ -25,6 +25,7 @@ test("new Library returns a library with the expected keys", async t => {
     "resolve",
     "svg",
     "tex",
+    "topojson",
     "vl",
     "width"
   ]);