babel-plugin-debug-macros
Version:
Debug macros and feature flag stripping
96 lines • 13.8 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const path_1 = __importDefault(require("path"));
const macros_1 = __importDefault(require("./utils/macros"));
const normalize_options_1 = require("./utils/normalize-options");
const babel_import_util_1 = require("babel-import-util");
function macros(babel) {
let t = babel.types;
function buildIdentifier(value, name) {
let replacement = t.booleanLiteral(value);
t.addComment(replacement, 'trailing', ` ${name} `);
return replacement;
}
return {
name: 'babel-feature-flags-and-debug-macros',
visitor: {
ImportSpecifier(path, state) {
let importPath = path.parent.source.value;
let flagsForImport = state.opts.flags[importPath];
if (flagsForImport) {
let flagName = t.isIdentifier(path.node.imported)
? path.node.imported.name
: path.node.imported.value;
let localBindingName = path.node.local.name;
if (!(flagName in flagsForImport)) {
throw new Error(`Imported ${flagName} from ${importPath} which is not a supported flag.`);
}
let flagValue = flagsForImport[flagName];
if (flagValue === null) {
return;
}
let binding = path.scope.getBinding(localBindingName);
binding.referencePaths.forEach((p) => {
if (flagValue === '@embroider/macros') {
p.replaceWith(t.callExpression(state.util.import(p, "@embroider/macros", "isDevelopingApp"), []));
p.scope.crawl();
}
else {
p.replaceWith(buildIdentifier(flagValue, flagName));
}
});
path.remove();
path.scope.removeOwnBinding(localBindingName);
}
},
ImportDeclaration: {
exit(path, state) {
let importPath = path.node.source.value;
let flagsForImport = state.opts.flags[importPath];
// remove flag source imports when no specifiers are left
if (flagsForImport && path.get('specifiers').length === 0) {
path.remove();
}
},
},
Program: {
enter(path, state) {
// most of our plugin declares state.opts as already being normalized.
// This is the spot where we force it become so.
state.opts = (0, normalize_options_1.normalizeOptions)(state.opts);
state.util = new babel_import_util_1.ImportUtil(t, path);
this.macroBuilder = new macros_1.default(babel, state.opts, state.util);
let body = path.get('body');
body.forEach((item) => {
if (item.isImportDeclaration()) {
let importPath = item.node.source.value;
let debugToolsImport = state.opts.debugTools.debugToolsImport;
if (debugToolsImport && debugToolsImport === importPath) {
if (!item.node.specifiers.length) {
item.remove();
}
else {
this.macroBuilder.collectDebugToolsSpecifiers(item.get('specifiers'));
}
}
}
});
},
exit() {
this.macroBuilder.cleanImports();
},
},
ExpressionStatement(path) {
this.macroBuilder.build(path);
},
},
};
}
exports.default = macros;
macros.baseDir = function () {
return path_1.default.resolve(__dirname, '..', '..');
};
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path.node.imported.name\n            : path.node.imported.value;\n          let localBindingName = path.node.local.name;\n\n          if (!(flagName in flagsForImport)) {\n            throw new Error(\n              `Imported ${flagName} from ${importPath} which is not a supported flag.`\n            );\n          }\n\n          let flagValue = flagsForImport[flagName];\n          if (flagValue === null) {\n            return;\n          }\n\n          let binding = path.scope.getBinding(localBindingName)!;\n\n          binding.referencePaths.forEach((p) => {\n            if (flagValue === '@embroider/macros') {\n              p.replaceWith(t.callExpression(state.util.import(p, \"@embroider/macros\", \"isDevelopingApp\"), []))\n              p.scope.crawl();\n            } else {\n              p.replaceWith(buildIdentifier(flagValue, flagName));\n            }\n          });\n\n          path.remove();\n          path.scope.removeOwnBinding(localBindingName);\n        }\n      },\n\n      ImportDeclaration: {\n        exit(path, state) {\n          let importPath = path.node.source.value;\n          let flagsForImport = state.opts.flags[importPath];\n\n          // remove flag source imports when no specifiers are left\n          if (flagsForImport && path.get('specifiers').length === 0) {\n            path.remove();\n          }\n        },\n      },\n\n      Program: {\n        enter(path, state) {\n          // most of our plugin declares state.opts as already being normalized.\n          // This is the spot where we force it become so.\n          state.opts = normalizeOptions(state.opts as unknown as UserOptions);\n          state.util = new ImportUtil(t, path)\n          this.macroBuilder = new Macros(babel, state.opts, state.util);\n\n          let body = path.get('body');\n\n          body.forEach((item) => {\n            if (item.isImportDeclaration()) {\n              let importPath = item.node.source.value;\n\n              let debugToolsImport = state.opts.debugTools.debugToolsImport;\n\n              if (debugToolsImport && debugToolsImport === importPath) {\n                if (!item.node.specifiers.length) {\n                  item.remove();\n                } else {\n                  this.macroBuilder.collectDebugToolsSpecifiers(item.get('specifiers'));\n                }\n              }\n            }\n          });\n        },\n\n        exit() {\n          this.macroBuilder.cleanImports();\n        },\n      },\n\n      ExpressionStatement(path) {\n        this.macroBuilder.build(path);\n      },\n    },\n  };\n}\n\nmacros.baseDir = function () {\n  return path.resolve(__dirname, '..', '..');\n};\n"]}