@radically-straightforward/build NPM

Radically Straightforward · Build

🏗️ Build static assets

Installation

$ npm install --save-dev @radically-straightforward/build

Usage

Author HTML, CSS, and browser JavaScript using tagged templates with @radically-straightforward/html, @radically-straightforward/css, and @radically-straightforward/javascript, for example:

source/index.mts

import fs from "node:fs/promises";
import childProcess from "node:child_process";
import server from "@radically-straightforward/server";
import html from "@radically-straightforward/html";
import css from "@radically-straightforward/css";
import javascript from "@radically-straightforward/javascript";
import * as caddy from "@radically-straightforward/caddy";

const application = server();

css`
  /* Global CSS, including ‘@font-face’s, typography, ‘.classes’, and so forth. */

  @import "@radically-straightforward/css/static/index.css";

  body {
    background-color: blue;
  }
`;

javascript`
  /* Global JavaScript, including library initialization, global functions, and so forth. */

  import * as javascript from "@radically-straightforward/javascript/static/index.mjs";

  console.log(javascript);
`;

application.push({
  method: "GET",
  pathname: "/",
  handler: (request, response) => {
    response.end(html`
      <!doctype html>
      <html>
        <head>
          <link rel="stylesheet" href="/${caddy.staticFiles["index.css"]}" />
          <script src="/${caddy.staticFiles["index.mjs"]}"></script>
        </head>
        <body>
          <h1
            css="${css`
              background-color: green;
            `}"
            javascript="${javascript`
              console.log("Hello World");
            `}"
          >
            @radically-straightforward/build
          </h1>
        </body>
      </html>
    `);
  },
});

const caddyServer = childProcess.spawn(
  "./node_modules/.bin/caddy",
  ["run", "--adapter", "caddyfile", "--config", "-"],
  { stdio: [undefined, "inherit", "inherit"] },
);
caddyServer.stdin.end(caddy.application());

Use @radically-straightforward/typescript and compile with TypeScript, which generates JavaScript files in the build/ directory.

Note: You may use other build processes, as long as they generate files at build/**/*.mjs.

Call @radically-straightforward/build:

Note: @radically-straightforward/build overwrites the files at build/**/*.mjs.

$ npx build

Parameters
--file-to-copy-with-hash: Globs of files to be copied into build/static/, for example, images, videos, and audios. The file names are appended with a hash of their contents to generate immutable names, for example, image.jpg may turn into image--JF98DJ2LL.jpg. Consult build/static.json for a mapping between the names (or use @radically-straightforward/caddy’s staticFiles, which reads from build/static.json). The --file-to-copy-with-hash parameter may be provided multiple times for multiple globs.
--file-to-copy-without-hash: The same as --file-to-copy-with-hash, but the names of the files are preserved. This is useful for favicon.ico and other files which must have particular names.

@radically-straightforward/build does the following:

Overwrites the files at build/**/*.mjs (and their corresponding source maps) to extract the tagged templates with CSS and browser JavaScript.
Uses esbuild to create a bundle of CSS and browser JavaScript. The result can be found in the build/static/ directory. The file names contain hashes of their contents to make them immutable, and you may consult build/static.json for a mapping between the names (or use @radically-straightforward/caddy’s staticFiles, which reads from build/static.json). The entrypoint of the CSS is at index.css and the entrypoint of the browser JavaScript is at index.mjs.
Note: The bundling process includes transpiling features such as CSS nesting, including CSS prefixes, minifying, and so forth.
Note: See @radically-straightforward/javascript for library support to use the extracted browser JavaScript.
Copies the files specified with --file-to-copy-with-hash and --file-to-copy-without-hash.

Interpolation

In CSS, interpolation is resolved at build time, which means that expressions must be self-contained and not refer to variables in scope.

For example, the following works:

css`
  ${["red", "green", "blue"].map(
    (color) => css`
      .text--${color} {
        color: ${color};
      }
    `,
  )}
`;

But the following does not work, because colors can’t be resolved at build time:

const colors = ["red", "green", "blue"];
css`
  ${colors.map(
    (color) => css`
      .text--${color} {
        color: ${color};
      }
    `,
  )}
`;

In some situations you may need to control the CSS at run time, depending on user data. There are two solutions for this, in order of preference:

Apply entire snippets of CSS conditionally, for example:

html`
  <div
    css="${userIsSignedIn
      ? css`
          background-color: green;
        `
      : css`
          background-color: red;
        `}"
  ></div>
`;

When that isn’t viable either, use CSS variables in style="___", for example:

html`
  <div
    style="--background-color: ${userIsSignedIn ? "green" : "red"};"
    css="${css`
      background-color: var(--background-color);
    `}"
  ></div>
`;

In browser JavaScript, interpolation is resolved at run time, and the values are transmitted from the server to the browser as JSON.

For example, the following works:

html`
  <div
    javascript="${javascript`
      console.log(${["Hello", 2]});
    `}"
  ></div>
`;

But the following does not work, because global browser JavaScript does not allow for interpolation:

javascript`
  console.log(${["Hello", 2]});
`;

Related Work

vanilla-extract, Linaria, CSJS with csjs-extractify, Radium, CSS-Zero, csstag and so forth

These libraries only cover CSS, not browser JavaScript, some of them are tied to other libraries, for example, React, and some of them aren’t maintained anymore.

build esbuild tagged template template literal

@babel/core @babel/generator @radically-straightforward/css @radically-straightforward/javascript base-x esbuild globby prettier xxhash-addon

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