babel-plugin-ember-template-compilation
Version:
Babel implementation of Ember's low-level template-compilation API
77 lines • 11.8 kB
JavaScript
import { dirname, resolve, sep } from 'path';
import { makePlugin } from './plugin.js';
import { assertTemplateCompiler } from './ember-template-compiler.js';
import { fileURLToPath, pathToFileURL } from 'url';
import { resolve as importMetaResolve } from 'import-meta-resolve';
export * from './public-types.js';
async function cwdImport(moduleName) {
let target = importMetaResolve(moduleName, pathToFileURL(process.cwd() + sep).href);
if (!target.startsWith('file:')) {
// import-meta-resolve doesn't consistently return file URLs rather than paths
// https://github.com/wooorm/import-meta-resolve/issues/31
//
// also, under some conditions which I have not been able to reproduce in
// the test suite, Windows will error if you pass an absolute path that is
// not a file: URL.
target = pathToFileURL(target).href;
}
return esCompat(await import(target));
}
async function handleNodeSpecificOptions(opts) {
let compiler = undefined;
if (opts.compilerPath) {
let mod = await cwdImport(opts.compilerPath);
assertTemplateCompiler(mod);
compiler = mod;
}
else if (opts.compiler) {
assertTemplateCompiler(opts.compiler);
compiler = opts.compiler;
}
else if ((opts.targetFormat ?? 'wire') === 'wire') {
let mod;
try {
// the newer path
mod = await cwdImport('ember-source/ember-template-compiler/index.js');
}
catch (err) {
if (err.code !== 'ERR_MODULE_NOT_FOUND') {
throw err;
}
// the deprecated path
mod = await cwdImport('ember-source/dist/ember-template-compiler.js');
}
assertTemplateCompiler(mod);
compiler = mod;
}
let transforms = [];
if (opts.transforms) {
transforms = await Promise.all(opts.transforms.map(async (t) => {
if (typeof t === 'string') {
return (await cwdImport(t)).default;
}
else if (Array.isArray(t) && typeof t[0] === 'string') {
return (await cwdImport(t[0])).default.call(undefined, t[1]);
}
else {
return t;
}
}));
}
return { ...opts, transforms, compiler };
}
const htmlbarsInlinePrecompile = makePlugin(handleNodeSpecificOptions);
htmlbarsInlinePrecompile._parallelBabel = {
requireFile: fileURLToPath(import.meta.url),
};
htmlbarsInlinePrecompile.baseDir = function () {
return resolve(dirname(fileURLToPath(import.meta.url)), '..');
};
export default htmlbarsInlinePrecompile;
function esCompat(m) {
if (m?.default?.__esModule) {
return m.default;
}
return m;
}
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You can set either `compilerPath` or set `compiler`. If you\n  // set neither, we will attempt to resolve\n  // \"ember-source/dist/ember-template-compiler.js\" from the current working\n  // directory.\n  compilerPath?: string;\n\n  // The ember-template-compiler.js module that ships within your ember-source\n  // version. You can set either `compilerPath` or `compiler`.\n  compiler?: EmberTemplateCompiler;\n\n  // List of custom transformations to apply to the handlebars AST before\n  // compilation. These can be\n  //   - the actual functions\n  //   - resolvable module names\n  //   - pairs of [resolvableModuleName, options], in which case we will invoke\n  //     the default export of the module with the options as argument, and the\n  //     actual ast transform function should be returned.\n  transforms?: Transform[];\n};\n\nasync function cwdImport(moduleName: string) {\n  let target = importMetaResolve(moduleName, pathToFileURL(process.cwd() + sep).href);\n  if (!target.startsWith('file:')) {\n    // import-meta-resolve doesn't consistently return file URLs rather than paths\n    // https://github.com/wooorm/import-meta-resolve/issues/31\n    //\n    // also, under some conditions which I have not been able to reproduce in\n    // the test suite, Windows will error if you pass an absolute path that is\n    // not a file: URL.\n    target = pathToFileURL(target).href;\n  }\n  return esCompat(await import(target));\n}\n\nasync function handleNodeSpecificOptions(opts: Options): Promise<SharedOptions> {\n  let compiler: EmberTemplateCompiler | undefined = undefined;\n  if (opts.compilerPath) {\n    let mod: any = await cwdImport(opts.compilerPath);\n    assertTemplateCompiler(mod);\n    compiler = mod;\n  } else if (opts.compiler) {\n    assertTemplateCompiler(opts.compiler);\n    compiler = opts.compiler;\n  } else if ((opts.targetFormat ?? 'wire') === 'wire') {\n    let mod: any;\n    try {\n      // the newer path\n      mod = await cwdImport('ember-source/ember-template-compiler/index.js');\n    } catch (err: any) {\n      if (err.code !== 'ERR_MODULE_NOT_FOUND') {\n        throw err;\n      }\n      // the deprecated path\n      mod = await cwdImport('ember-source/dist/ember-template-compiler.js');\n    }\n    assertTemplateCompiler(mod);\n    compiler = mod;\n  }\n\n  let transforms = [];\n  if (opts.transforms) {\n    transforms = await Promise.all(\n      opts.transforms.map(async (t) => {\n        if (typeof t === 'string') {\n          return (await cwdImport(t)).default;\n        } else if (Array.isArray(t) && typeof t[0] === 'string') {\n          return (await cwdImport(t[0])).default.call(undefined, t[1]);\n        } else {\n          return t;\n        }\n      })\n    );\n  }\n  return { ...opts, transforms, compiler };\n}\n\nconst htmlbarsInlinePrecompile = makePlugin(handleNodeSpecificOptions);\n\n(htmlbarsInlinePrecompile as any)._parallelBabel = {\n  requireFile: fileURLToPath(import.meta.url),\n};\n\n(htmlbarsInlinePrecompile as any).baseDir = function () {\n  return resolve(dirname(fileURLToPath(import.meta.url)), '..');\n};\n\nexport default htmlbarsInlinePrecompile as typeof htmlbarsInlinePrecompile & {\n  baseDir(): string;\n  _parallelBabel: { requireFile: string };\n};\n\nfunction esCompat(m: Record<string, any>) {\n  if (m?.default?.__esModule) {\n    return m.default;\n  }\n  return m;\n}\n"]}