WIP - Switch to esbuild for watch bundling

Author: GordonSmith

esbuild.mjs

@@ -0,0 +1,134 @@
+import * as esbuild from 'esbuild'
+import yargs from "yargs";
+import { hideBin } from "yargs/helpers";
+
+const myYargs = yargs(hideBin(process.argv));
+myYargs
+    .usage("Usage: esbuild [options]")
+    .demandCommand(0, 0)
+    .example("sfx-wasm --watch", "Bundle and watch for changes")
+    .option("d", {
+        alias: "debug",
+        describe: "Debug build",
+        boolean: true
+    })
+    .option("w", {
+        alias: "watch",
+        describe: "Watch for changes",
+        boolean: true
+    })
+    .help("h")
+    .alias("h", "help")
+    .epilog("https://github.com/hpcc-systems/hpcc-js-wasm")
+    ;
+const argv = await myYargs.argv;
+
+async function build(config) {
+    esbuild.build(config);
+}
+
+async function watch(config) {
+    const ctx = await esbuild.context({
+        ...config,
+        plugins: [{
+            name: 'rebuild-notify',
+            setup(build) {
+                build.onEnd(result => {
+                    console.log(`Built ${config.outfile}`);
+                })
+            },
+        }]
+    });
+    await ctx.watch();
+}
+
+async function browserTpl(input, umdOutput, esOutput, globalName = undefined, external = []) {
+    const entryPoints = [input + ".js"];
+    (argv.watch ? watch : build)({
+        entryPoints,
+        outfile: esOutput + '.js',
+        sourcemap: true,
+        platform: "browser",
+        format: "esm",
+        bundle: true,
+        minify: !argv.debug,
+        external
+    });
+    if (global) {
+        (argv.watch ? watch : build)({
+            entryPoints,
+            outfile: umdOutput + '.js',
+            sourcemap: true,
+            platform: "browser",
+            format: "iife",
+            globalName,
+            bundle: true,
+            minify: !argv.debug,
+            external
+        });
+    }
+}
+
+function nodeTpl(input, esOutput, external = []) {
+    const entryPoints = [input + ".js"];
+    (argv.watch ? watch : build)({
+        entryPoints,
+        outfile: esOutput + '.mjs',
+        sourcemap: true,
+        platform: "node",
+        format: "esm",
+        bundle: true,
+        minify: !argv.debug,
+        external
+    });
+    (argv.watch ? watch : build)({
+        entryPoints,
+        outfile: esOutput + '.cjs',
+        sourcemap: true,
+        platform: "node",
+        format: "cjs",
+        bundle: true,
+        minify: !argv.debug,
+        external
+    });
+}
+
+function bothTpl(input, umdOutput, esOutput, globalName = undefined, external = []) {
+    browserTpl(input, umdOutput, esOutput, globalName, external);
+    nodeTpl(input, esOutput, external);
+}
+
+bothTpl("lib-esm/index", "dist/index.umd", "dist/index", "hpccjs_wasm", ["./base91.js", "./duckdb.js", "./expat.js", "./graphviz.js", "./zstd.js"]);
+bothTpl("lib-esm/base91", "dist/base91.umd", "dist/base91", "hpccjs_wasm_base91");
+bothTpl("lib-esm/duckdb", "dist/duckdb.umd", "dist/duckdb", "hpccjs_wasm_duckdb");
+bothTpl("lib-esm/graphviz", "dist/graphviz.umd", "dist/graphviz", "hpccjs_wasm_graphviz");
+bothTpl("lib-esm/expat", "dist/expat.umd", "dist/expat", "hpccjs_wasm_expat");
+bothTpl("lib-esm/zstd", "dist/zstd.umd", "dist/zstd", "hpccjs_wasm_zstd");
+
+browserTpl("lib-esm/__tests__/index-browser", "dist-test/index.umd", "dist-test/index");
+browserTpl("lib-esm/__tests__/worker-browser", "dist-test/worker.umd", "dist-test/worker");
+nodeTpl("lib-esm/__tests__/index-node", "dist-test/index.node");
+nodeTpl("lib-esm/__tests__/worker-node", "dist-test/worker.node");
+
+
+
+// await esbuild.build({
+//     entryPoints: ['./lib-esm/base91.js'],
+//     bundle: true,
+//     outfile: './dist/base91.js',
+// })
+
+// await esbuild.build({
+//     entryPoints: ['./lib-esm/base91.js'],
+//     bundle: true,
+//     platform: 'node',
+//     format: 'cjs',
+//     outfile: './dist/base91.cjs',
+// })
+
+// await esbuild.build({
+//     entryPoints: ['./lib-esm/base91.js'],
+//     bundle: true,
+//     platform: 'node',
+//     outfile: './dist/base91.mjs',
+// })