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Diffstat (limited to 'node_modules/babel-preset-current-node-syntax')
5 files changed, 155 insertions, 0 deletions
diff --git a/node_modules/babel-preset-current-node-syntax/LICENSE b/node_modules/babel-preset-current-node-syntax/LICENSE new file mode 100644 index 0000000..7f09add --- /dev/null +++ b/node_modules/babel-preset-current-node-syntax/LICENSE @@ -0,0 +1,22 @@ +MIT License + +Copyright (c) 2020 Nicolò Ribaudo and other contributors + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +"Software"), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/node_modules/babel-preset-current-node-syntax/README.md b/node_modules/babel-preset-current-node-syntax/README.md new file mode 100644 index 0000000..d6b42a0 --- /dev/null +++ b/node_modules/babel-preset-current-node-syntax/README.md @@ -0,0 +1,30 @@ +# `babel-preset-current-node-syntax` + +> A Babel preset that enables parsing of proposals supported by the current Node.js version. + +## Installation + +If you are using yarn: +``` +yarn add --dev babel-preset-current-node-syntax +``` + +If you are using npm: +``` +npm install --save-dev babel-preset-current-node-syntax +``` + +## Contributing + +PRs are welcome! The codebase is so small that I didn't setup a linter, but try +to match the style of the existing code. + +You can run tests with the following command: +``` +yarn node test/index.js +``` + +The `test/fixtures.json` file contains a bunch of syntax tests, alongside with +the minimum supported node version for each of them. Babel should throw on +older versions, without support for that given syntax. +All the tests are run using `@babel/parser@7.0.0`. diff --git a/node_modules/babel-preset-current-node-syntax/package.json b/node_modules/babel-preset-current-node-syntax/package.json new file mode 100644 index 0000000..af07533 --- /dev/null +++ b/node_modules/babel-preset-current-node-syntax/package.json @@ -0,0 +1,41 @@ +{ + "name": "babel-preset-current-node-syntax", + "version": "1.0.1", + "description": "A Babel preset that enables parsing of proposals supported by the current Node.js version.", + "main": "src/index.js", + "repository": { + "type": "git", + "url": "https://github.com/nicolo-ribaudo/babel-preset-current-node-syntax.git" + }, + "author": { + "name": "Nicolò Ribaudo", + "url": "https://github.com/nicolo-ribaudo" + }, + "scripts": { + "test": "node ./test/index.js", + "prepublish": "./scripts/check-yarn-bug.sh" + }, + "dependencies": { + "@babel/plugin-syntax-async-generators": "^7.8.4", + "@babel/plugin-syntax-bigint": "^7.8.3", + "@babel/plugin-syntax-class-properties": "^7.8.3", + "@babel/plugin-syntax-import-meta": "^7.8.3", + "@babel/plugin-syntax-json-strings": "^7.8.3", + "@babel/plugin-syntax-logical-assignment-operators": "^7.8.3", + "@babel/plugin-syntax-nullish-coalescing-operator": "^7.8.3", + "@babel/plugin-syntax-numeric-separator": "^7.8.3", + "@babel/plugin-syntax-object-rest-spread": "^7.8.3", + "@babel/plugin-syntax-optional-catch-binding": "^7.8.3", + "@babel/plugin-syntax-optional-chaining": "^7.8.3", + "@babel/plugin-syntax-top-level-await": "^7.8.3" + }, + "peerDependencies": { + "@babel/core": "^7.0.0" + }, + "devDependencies": { + "@babel/core": "7.0.0", + "@babel/parser-7.0.0": "npm:@babel/parser@7.0.0", + "@babel/parser-7.9.0": "npm:@babel/parser@7.9.0" + }, + "license": "MIT" +}
\ No newline at end of file diff --git a/node_modules/babel-preset-current-node-syntax/scripts/check-yarn-bug.sh b/node_modules/babel-preset-current-node-syntax/scripts/check-yarn-bug.sh new file mode 100644 index 0000000..3deb69f --- /dev/null +++ b/node_modules/babel-preset-current-node-syntax/scripts/check-yarn-bug.sh @@ -0,0 +1,5 @@ +if grep 3155328e5 .yarn/releases/yarn-*.cjs -c; then + echo "Your version of yarn is affected by https://github.com/yarnpkg/berry/issues/1882" + echo "Please run \`sed -i -e \"s/3155328e5/4567890e5/g\" .yarn/releases/yarn-*.cjs\`" + exit 1 +fi diff --git a/node_modules/babel-preset-current-node-syntax/src/index.js b/node_modules/babel-preset-current-node-syntax/src/index.js new file mode 100644 index 0000000..e0243bd --- /dev/null +++ b/node_modules/babel-preset-current-node-syntax/src/index.js @@ -0,0 +1,57 @@ +const tests = { + // ECMAScript 2018 + "object-rest-spread": ["({ ...{} })", "({ ...x } = {})"], // Babel 7.2.0 + "async-generators": ["async function* f() {}"], // Babel 7.2.0 + + // ECMAScript 2019 + "optional-catch-binding": ["try {} catch {}"], // Babel 7.2.0 + "json-strings": ["'\\u2028'"], // Babel 7.2.0 + + // ECMAScript 2020 + "bigint": ["1n"], // Babel 7.8.0 + "optional-chaining": ["a?.b"], // Babel 7.9.0 + "nullish-coalescing-operator": ["a ?? b"], // Babel 7.9.0 + // import.meta is handled manually + + // Stage 3 + "numeric-separator": ["1_2"], + "class-properties": [ + "(class { x = 1 })", + "(class { #x = 1 })", + "(class { #x() {} })", + ], + "logical-assignment-operators": ["a ||= b", "a &&= b", "a ??= c"], +}; + +const plugins = []; +const works = (test) => { + try { + // Wrap the test in a function to only test the syntax, without executing it + (0, eval)(`(() => { ${test} })`); + return true; + } catch (_error) { + return false; + } +}; + +for (const [name, cases] of Object.entries(tests)) { + if (cases.some(works)) { + plugins.push(require.resolve(`@babel/plugin-syntax-${name}`)); + } +} + +// import.meta is only allowed in modules, and modules can only be evaluated +// synchronously. For this reason, we cannot detect import.meta support at +// runtime. It is supported starting from 10.4, so we can check the version. +const major = parseInt(process.versions.node, 10); +const minor = parseInt(process.versions.node.match(/^\d+\.(\d+)/)[1], 10); +if (major > 10 || (major === 10 && minor >= 4)) { + plugins.push(require.resolve("@babel/plugin-syntax-import-meta")); +} +// Same for top level await - it is only supported in modules. It is supported +// from 14.3.0 +if (major > 14 || (major === 14 && minor >= 3)) { + plugins.push(require.resolve("@babel/plugin-syntax-top-level-await")); +} + +module.exports = () => ({ plugins }); |