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Domen Kožar 2019-11-13 17:14:48 +01:00
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MIT License
Copyright (c) 2014-present Sebastian McKenzie 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.

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# @babel/template
> Generate an AST from a string template.
See our website [@babel/template](https://babeljs.io/docs/en/next/babel-template.html) for more information or the [issues](https://github.com/babel/babel/issues?utf8=%E2%9C%93&q=is%3Aissue+label%3A%22pkg%3A%20template%22+is%3Aopen) associated with this package.
## Install
Using npm:
```sh
npm install --save-dev @babel/template
```
or using yarn:
```sh
yarn add @babel/template --dev
```

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node_modules/@babel/template/lib/builder.js generated vendored Normal file
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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = createTemplateBuilder;
var _options = require("./options");
var _string = _interopRequireDefault(require("./string"));
var _literal = _interopRequireDefault(require("./literal"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
const NO_PLACEHOLDER = (0, _options.validate)({
placeholderPattern: false
});
function createTemplateBuilder(formatter, defaultOpts) {
const templateFnCache = new WeakMap();
const templateAstCache = new WeakMap();
const cachedOpts = defaultOpts || (0, _options.validate)(null);
return Object.assign((tpl, ...args) => {
if (typeof tpl === "string") {
if (args.length > 1) throw new Error("Unexpected extra params.");
return extendedTrace((0, _string.default)(formatter, tpl, (0, _options.merge)(cachedOpts, (0, _options.validate)(args[0]))));
} else if (Array.isArray(tpl)) {
let builder = templateFnCache.get(tpl);
if (!builder) {
builder = (0, _literal.default)(formatter, tpl, cachedOpts);
templateFnCache.set(tpl, builder);
}
return extendedTrace(builder(args));
} else if (typeof tpl === "object" && tpl) {
if (args.length > 0) throw new Error("Unexpected extra params.");
return createTemplateBuilder(formatter, (0, _options.merge)(cachedOpts, (0, _options.validate)(tpl)));
}
throw new Error(`Unexpected template param ${typeof tpl}`);
}, {
ast: (tpl, ...args) => {
if (typeof tpl === "string") {
if (args.length > 1) throw new Error("Unexpected extra params.");
return (0, _string.default)(formatter, tpl, (0, _options.merge)((0, _options.merge)(cachedOpts, (0, _options.validate)(args[0])), NO_PLACEHOLDER))();
} else if (Array.isArray(tpl)) {
let builder = templateAstCache.get(tpl);
if (!builder) {
builder = (0, _literal.default)(formatter, tpl, (0, _options.merge)(cachedOpts, NO_PLACEHOLDER));
templateAstCache.set(tpl, builder);
}
return builder(args)();
}
throw new Error(`Unexpected template param ${typeof tpl}`);
}
});
}
function extendedTrace(fn) {
let rootStack = "";
try {
throw new Error();
} catch (error) {
if (error.stack) {
rootStack = error.stack.split("\n").slice(3).join("\n");
}
}
return arg => {
try {
return fn(arg);
} catch (err) {
err.stack += `\n =============\n${rootStack}`;
throw err;
}
};
}

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.program = exports.expression = exports.statement = exports.statements = exports.smart = void 0;
function makeStatementFormatter(fn) {
return {
code: str => `/* @babel/template */;\n${str}`,
validate: () => {},
unwrap: ast => {
return fn(ast.program.body.slice(1));
}
};
}
const smart = makeStatementFormatter(body => {
if (body.length > 1) {
return body;
} else {
return body[0];
}
});
exports.smart = smart;
const statements = makeStatementFormatter(body => body);
exports.statements = statements;
const statement = makeStatementFormatter(body => {
if (body.length === 0) {
throw new Error("Found nothing to return.");
}
if (body.length > 1) {
throw new Error("Found multiple statements but wanted one");
}
return body[0];
});
exports.statement = statement;
const expression = {
code: str => `(\n${str}\n)`,
validate: ({
program
}) => {
if (program.body.length > 1) {
throw new Error("Found multiple statements but wanted one");
}
const expression = program.body[0].expression;
if (expression.start === 0) {
throw new Error("Parse result included parens.");
}
},
unwrap: ast => ast.program.body[0].expression
};
exports.expression = expression;
const program = {
code: str => str,
validate: () => {},
unwrap: ast => ast.program
};
exports.program = program;

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = exports.program = exports.expression = exports.statements = exports.statement = exports.smart = void 0;
var formatters = _interopRequireWildcard(require("./formatters"));
var _builder = _interopRequireDefault(require("./builder"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
const smart = (0, _builder.default)(formatters.smart);
exports.smart = smart;
const statement = (0, _builder.default)(formatters.statement);
exports.statement = statement;
const statements = (0, _builder.default)(formatters.statements);
exports.statements = statements;
const expression = (0, _builder.default)(formatters.expression);
exports.expression = expression;
const program = (0, _builder.default)(formatters.program);
exports.program = program;
var _default = Object.assign(smart.bind(undefined), {
smart,
statement,
statements,
expression,
program,
ast: smart.ast
});
exports.default = _default;

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = literalTemplate;
var _options = require("./options");
var _parse = _interopRequireDefault(require("./parse"));
var _populate = _interopRequireDefault(require("./populate"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function literalTemplate(formatter, tpl, opts) {
const {
metadata,
names
} = buildLiteralData(formatter, tpl, opts);
return arg => {
const defaultReplacements = arg.reduce((acc, replacement, i) => {
acc[names[i]] = replacement;
return acc;
}, {});
return arg => {
const replacements = (0, _options.normalizeReplacements)(arg);
if (replacements) {
Object.keys(replacements).forEach(key => {
if (Object.prototype.hasOwnProperty.call(defaultReplacements, key)) {
throw new Error("Unexpected replacement overlap.");
}
});
}
return formatter.unwrap((0, _populate.default)(metadata, replacements ? Object.assign(replacements, defaultReplacements) : defaultReplacements));
};
};
}
function buildLiteralData(formatter, tpl, opts) {
let names;
let nameSet;
let metadata;
let prefix = "";
do {
prefix += "$";
const result = buildTemplateCode(tpl, prefix);
names = result.names;
nameSet = new Set(names);
metadata = (0, _parse.default)(formatter, formatter.code(result.code), {
parser: opts.parser,
placeholderWhitelist: new Set(result.names.concat(opts.placeholderWhitelist ? Array.from(opts.placeholderWhitelist) : [])),
placeholderPattern: opts.placeholderPattern,
preserveComments: opts.preserveComments,
syntacticPlaceholders: opts.syntacticPlaceholders
});
} while (metadata.placeholders.some(placeholder => placeholder.isDuplicate && nameSet.has(placeholder.name)));
return {
metadata,
names
};
}
function buildTemplateCode(tpl, prefix) {
const names = [];
let code = tpl[0];
for (let i = 1; i < tpl.length; i++) {
const value = `${prefix}${i - 1}`;
names.push(value);
code += value + tpl[i];
}
return {
names,
code
};
}

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.merge = merge;
exports.validate = validate;
exports.normalizeReplacements = normalizeReplacements;
function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }
function merge(a, b) {
const {
placeholderWhitelist = a.placeholderWhitelist,
placeholderPattern = a.placeholderPattern,
preserveComments = a.preserveComments,
syntacticPlaceholders = a.syntacticPlaceholders
} = b;
return {
parser: Object.assign({}, a.parser, {}, b.parser),
placeholderWhitelist,
placeholderPattern,
preserveComments,
syntacticPlaceholders
};
}
function validate(opts) {
if (opts != null && typeof opts !== "object") {
throw new Error("Unknown template options.");
}
const _ref = opts || {},
{
placeholderWhitelist,
placeholderPattern,
preserveComments,
syntacticPlaceholders
} = _ref,
parser = _objectWithoutPropertiesLoose(_ref, ["placeholderWhitelist", "placeholderPattern", "preserveComments", "syntacticPlaceholders"]);
if (placeholderWhitelist != null && !(placeholderWhitelist instanceof Set)) {
throw new Error("'.placeholderWhitelist' must be a Set, null, or undefined");
}
if (placeholderPattern != null && !(placeholderPattern instanceof RegExp) && placeholderPattern !== false) {
throw new Error("'.placeholderPattern' must be a RegExp, false, null, or undefined");
}
if (preserveComments != null && typeof preserveComments !== "boolean") {
throw new Error("'.preserveComments' must be a boolean, null, or undefined");
}
if (syntacticPlaceholders != null && typeof syntacticPlaceholders !== "boolean") {
throw new Error("'.syntacticPlaceholders' must be a boolean, null, or undefined");
}
if (syntacticPlaceholders === true && (placeholderWhitelist != null || placeholderPattern != null)) {
throw new Error("'.placeholderWhitelist' and '.placeholderPattern' aren't compatible" + " with '.syntacticPlaceholders: true'");
}
return {
parser,
placeholderWhitelist: placeholderWhitelist || undefined,
placeholderPattern: placeholderPattern == null ? undefined : placeholderPattern,
preserveComments: preserveComments == null ? false : preserveComments,
syntacticPlaceholders: syntacticPlaceholders == null ? undefined : syntacticPlaceholders
};
}
function normalizeReplacements(replacements) {
if (Array.isArray(replacements)) {
return replacements.reduce((acc, replacement, i) => {
acc["$" + i] = replacement;
return acc;
}, {});
} else if (typeof replacements === "object" || replacements == null) {
return replacements || undefined;
}
throw new Error("Template replacements must be an array, object, null, or undefined");
}

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = parseAndBuildMetadata;
function t() {
const data = _interopRequireWildcard(require("@babel/types"));
t = function () {
return data;
};
return data;
}
function _parser() {
const data = require("@babel/parser");
_parser = function () {
return data;
};
return data;
}
function _codeFrame() {
const data = require("@babel/code-frame");
_codeFrame = function () {
return data;
};
return data;
}
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
const PATTERN = /^[_$A-Z0-9]+$/;
function parseAndBuildMetadata(formatter, code, opts) {
const ast = parseWithCodeFrame(code, opts.parser);
const {
placeholderWhitelist,
placeholderPattern,
preserveComments,
syntacticPlaceholders
} = opts;
t().removePropertiesDeep(ast, {
preserveComments
});
formatter.validate(ast);
const syntactic = {
placeholders: [],
placeholderNames: new Set()
};
const legacy = {
placeholders: [],
placeholderNames: new Set()
};
const isLegacyRef = {
value: undefined
};
t().traverse(ast, placeholderVisitorHandler, {
syntactic,
legacy,
isLegacyRef,
placeholderWhitelist,
placeholderPattern,
syntacticPlaceholders
});
return Object.assign({
ast
}, isLegacyRef.value ? legacy : syntactic);
}
function placeholderVisitorHandler(node, ancestors, state) {
let name;
if (t().isPlaceholder(node)) {
if (state.syntacticPlaceholders === false) {
throw new Error("%%foo%%-style placeholders can't be used when " + "'.syntacticPlaceholders' is false.");
} else {
name = node.name.name;
state.isLegacyRef.value = false;
}
} else if (state.isLegacyRef.value === false || state.syntacticPlaceholders) {
return;
} else if (t().isIdentifier(node) || t().isJSXIdentifier(node)) {
name = node.name;
state.isLegacyRef.value = true;
} else if (t().isStringLiteral(node)) {
name = node.value;
state.isLegacyRef.value = true;
} else {
return;
}
if (!state.isLegacyRef.value && (state.placeholderPattern != null || state.placeholderWhitelist != null)) {
throw new Error("'.placeholderWhitelist' and '.placeholderPattern' aren't compatible" + " with '.syntacticPlaceholders: true'");
}
if (state.isLegacyRef.value && (state.placeholderPattern === false || !(state.placeholderPattern || PATTERN).test(name)) && (!state.placeholderWhitelist || !state.placeholderWhitelist.has(name))) {
return;
}
ancestors = ancestors.slice();
const {
node: parent,
key
} = ancestors[ancestors.length - 1];
let type;
if (t().isStringLiteral(node) || t().isPlaceholder(node, {
expectedNode: "StringLiteral"
})) {
type = "string";
} else if (t().isNewExpression(parent) && key === "arguments" || t().isCallExpression(parent) && key === "arguments" || t().isFunction(parent) && key === "params") {
type = "param";
} else if (t().isExpressionStatement(parent) && !t().isPlaceholder(node)) {
type = "statement";
ancestors = ancestors.slice(0, -1);
} else if (t().isStatement(node) && t().isPlaceholder(node)) {
type = "statement";
} else {
type = "other";
}
const {
placeholders,
placeholderNames
} = state.isLegacyRef.value ? state.legacy : state.syntactic;
placeholders.push({
name,
type,
resolve: ast => resolveAncestors(ast, ancestors),
isDuplicate: placeholderNames.has(name)
});
placeholderNames.add(name);
}
function resolveAncestors(ast, ancestors) {
let parent = ast;
for (let i = 0; i < ancestors.length - 1; i++) {
const {
key,
index
} = ancestors[i];
if (index === undefined) {
parent = parent[key];
} else {
parent = parent[key][index];
}
}
const {
key,
index
} = ancestors[ancestors.length - 1];
return {
parent,
key,
index
};
}
function parseWithCodeFrame(code, parserOpts) {
parserOpts = Object.assign({
allowReturnOutsideFunction: true,
allowSuperOutsideMethod: true,
sourceType: "module"
}, parserOpts, {
plugins: (parserOpts.plugins || []).concat("placeholders")
});
try {
return (0, _parser().parse)(code, parserOpts);
} catch (err) {
const loc = err.loc;
if (loc) {
err.message += "\n" + (0, _codeFrame().codeFrameColumns)(code, {
start: loc
});
err.code = "BABEL_TEMPLATE_PARSE_ERROR";
}
throw err;
}
}

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = populatePlaceholders;
function t() {
const data = _interopRequireWildcard(require("@babel/types"));
t = function () {
return data;
};
return data;
}
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
function populatePlaceholders(metadata, replacements) {
const ast = t().cloneNode(metadata.ast);
if (replacements) {
metadata.placeholders.forEach(placeholder => {
if (!Object.prototype.hasOwnProperty.call(replacements, placeholder.name)) {
const placeholderName = placeholder.name;
throw new Error(`Error: No substitution given for "${placeholderName}". If this is not meant to be a
placeholder you may want to consider passing one of the following options to @babel/template:
- { placeholderPattern: false, placeholderWhitelist: new Set(['${placeholderName}'])}
- { placeholderPattern: /^${placeholderName}$/ }`);
}
});
Object.keys(replacements).forEach(key => {
if (!metadata.placeholderNames.has(key)) {
throw new Error(`Unknown substitution "${key}" given`);
}
});
}
metadata.placeholders.slice().reverse().forEach(placeholder => {
try {
applyReplacement(placeholder, ast, replacements && replacements[placeholder.name] || null);
} catch (e) {
e.message = `@babel/template placeholder "${placeholder.name}": ${e.message}`;
throw e;
}
});
return ast;
}
function applyReplacement(placeholder, ast, replacement) {
if (placeholder.isDuplicate) {
if (Array.isArray(replacement)) {
replacement = replacement.map(node => t().cloneNode(node));
} else if (typeof replacement === "object") {
replacement = t().cloneNode(replacement);
}
}
const {
parent,
key,
index
} = placeholder.resolve(ast);
if (placeholder.type === "string") {
if (typeof replacement === "string") {
replacement = t().stringLiteral(replacement);
}
if (!replacement || !t().isStringLiteral(replacement)) {
throw new Error("Expected string substitution");
}
} else if (placeholder.type === "statement") {
if (index === undefined) {
if (!replacement) {
replacement = t().emptyStatement();
} else if (Array.isArray(replacement)) {
replacement = t().blockStatement(replacement);
} else if (typeof replacement === "string") {
replacement = t().expressionStatement(t().identifier(replacement));
} else if (!t().isStatement(replacement)) {
replacement = t().expressionStatement(replacement);
}
} else {
if (replacement && !Array.isArray(replacement)) {
if (typeof replacement === "string") {
replacement = t().identifier(replacement);
}
if (!t().isStatement(replacement)) {
replacement = t().expressionStatement(replacement);
}
}
}
} else if (placeholder.type === "param") {
if (typeof replacement === "string") {
replacement = t().identifier(replacement);
}
if (index === undefined) throw new Error("Assertion failure.");
} else {
if (typeof replacement === "string") {
replacement = t().identifier(replacement);
}
if (Array.isArray(replacement)) {
throw new Error("Cannot replace single expression with an array.");
}
}
if (index === undefined) {
t().validate(parent, key, replacement);
parent[key] = replacement;
} else {
const items = parent[key].slice();
if (placeholder.type === "statement" || placeholder.type === "param") {
if (replacement == null) {
items.splice(index, 1);
} else if (Array.isArray(replacement)) {
items.splice(index, 1, ...replacement);
} else {
items[index] = replacement;
}
} else {
items[index] = replacement;
}
t().validate(parent, key, items);
parent[key] = items;
}
}

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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = stringTemplate;
var _options = require("./options");
var _parse = _interopRequireDefault(require("./parse"));
var _populate = _interopRequireDefault(require("./populate"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function stringTemplate(formatter, code, opts) {
code = formatter.code(code);
let metadata;
return arg => {
const replacements = (0, _options.normalizeReplacements)(arg);
if (!metadata) metadata = (0, _parse.default)(formatter, code, opts);
return formatter.unwrap((0, _populate.default)(metadata, replacements));
};
}

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../../../parser/bin/babel-parser.js

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{
"name": "@babel/template",
"version": "7.6.0",
"description": "Generate an AST from a string template.",
"author": "Sebastian McKenzie <sebmck@gmail.com>",
"homepage": "https://babeljs.io/",
"license": "MIT",
"publishConfig": {
"access": "public"
},
"repository": "https://github.com/babel/babel/tree/master/packages/babel-template",
"main": "lib/index.js",
"dependencies": {
"@babel/code-frame": "^7.0.0",
"@babel/parser": "^7.6.0",
"@babel/types": "^7.6.0"
},
"gitHead": "cbd5a26e57758e3f748174ff84aa570e8780e85d"
}