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import { sanitize_template_string } from './sanitize_template_string.js';
/**
* @param {Array<import('estree').Expression | import('estree').SpreadElement | null>} elements
* @returns {import('estree').ArrayExpression}
*/
export function array(elements = []) {
return { type: 'ArrayExpression', elements };
}
/**
* @param {Array<import('estree').Pattern | null>} elements
* @returns {import('estree').ArrayPattern}
*/
export function array_pattern(elements) {
return { type: 'ArrayPattern', elements };
}
/**
* @param {import('estree').Pattern} left
* @param {import('estree').Expression} right
* @returns {import('estree').AssignmentPattern}
*/
export function assignment_pattern(left, right) {
return { type: 'AssignmentPattern', left, right };
}
/**
* @param {Array<import('estree').Pattern>} params
* @param {import('estree').BlockStatement | import('estree').Expression} body
* @returns {import('estree').ArrowFunctionExpression}
*/
export function arrow(params, body) {
return {
type: 'ArrowFunctionExpression',
params,
body,
expression: body.type !== 'BlockStatement',
generator: false,
async: false,
metadata: /** @type {any} */ (null) // should not be used by codegen
};
}
/**
* @param {import('estree').AssignmentOperator} operator
* @param {import('estree').Pattern} left
* @param {import('estree').Expression} right
* @returns {import('estree').AssignmentExpression}
*/
export function assignment(operator, left, right) {
return { type: 'AssignmentExpression', operator, left, right };
}
/**
* @template T
* @param {T & import('estree').BaseFunction} func
* @returns {T & import('estree').BaseFunction}
*/
export function async(func) {
return { ...func, async: true };
}
/**
* @param {import('estree').Expression} argument
* @returns {import('estree').AwaitExpression}
*/
function await_builder(argument) {
return { type: 'AwaitExpression', argument };
}
/**
* @param {import('estree').BinaryOperator} operator
* @param {import('estree').Expression} left
* @param {import('estree').Expression} right
* @returns {import('estree').BinaryExpression}
*/
export function binary(operator, left, right) {
return { type: 'BinaryExpression', operator, left, right };
}
/**
* @param {import('estree').Statement[]} body
* @returns {import('estree').BlockStatement}
*/
export function block(body) {
return { type: 'BlockStatement', body };
}
/**
* @param {string} name
* @param {import('estree').Statement} body
* @returns {import('estree').LabeledStatement}
*/
export function labeled(name, body) {
return { type: 'LabeledStatement', label: id(name), body };
}
/**
* @param {string | import('estree').Expression} callee
* @param {...(import('estree').Expression | import('estree').SpreadElement)} args
* @returns {import('estree').CallExpression}
*/
export function call(callee, ...args) {
if (typeof callee === 'string') callee = id(callee);
args = args.slice();
while (args.length > 0 && !args.at(-1)) args.pop();
return {
type: 'CallExpression',
callee,
arguments: args,
optional: false
};
}
/**
* @param {string | import('estree').Expression} callee
* @param {...import('estree').Expression} args
* @returns {import('estree').ChainExpression}
*/
export function maybe_call(callee, ...args) {
const expression = /** @type {import('estree').SimpleCallExpression} */ (call(callee, ...args));
expression.optional = true;
return {
type: 'ChainExpression',
expression
};
}
/**
* @param {import('estree').UnaryOperator} operator
* @param {import('estree').Expression} argument
* @returns {import('estree').UnaryExpression}
*/
export function unary(operator, argument) {
return { type: 'UnaryExpression', argument, operator, prefix: true };
}
/**
* @param {import('estree').Expression} test
* @param {import('estree').Expression} consequent
* @param {import('estree').Expression} alternate
* @returns {import('estree').ConditionalExpression}
*/
export function conditional(test, consequent, alternate) {
return { type: 'ConditionalExpression', test, consequent, alternate };
}
/**
* @param {import('estree').LogicalOperator} operator
* @param {import('estree').Expression} left
* @param {import('estree').Expression} right
* @returns {import('estree').LogicalExpression}
*/
export function logical(operator, left, right) {
return { type: 'LogicalExpression', operator, left, right };
}
/**
* @param {'const' | 'let' | 'var'} kind
* @param {string | import('estree').Pattern} pattern
* @param {import('estree').Expression} [init]
* @returns {import('estree').VariableDeclaration}
*/
export function declaration(kind, pattern, init) {
if (typeof pattern === 'string') pattern = id(pattern);
return {
type: 'VariableDeclaration',
kind,
declarations: [init ? declarator(pattern, init) : declarator(pattern)]
};
}
/**
* @param {import('estree').Pattern} id
* @param {import('estree').Expression} [init]
* @returns {import('estree').VariableDeclarator}
*/
export function declarator(id, init) {
return { type: 'VariableDeclarator', id, init };
}
/** @type {import('estree').EmptyStatement} */
export const empty = {
type: 'EmptyStatement'
};
/**
* @param {import('estree').Expression | import('estree').MaybeNamedClassDeclaration | import('estree').MaybeNamedFunctionDeclaration} declaration
* @returns {import('estree').ExportDefaultDeclaration}
*/
export function export_default(declaration) {
return { type: 'ExportDefaultDeclaration', declaration };
}
/**
* @param {import('estree').Identifier} id
* @param {import('estree').Pattern[]} params
* @param {import('estree').BlockStatement} body
* @returns {import('estree').FunctionDeclaration}
*/
export function function_declaration(id, params, body) {
return {
type: 'FunctionDeclaration',
id,
params,
body,
generator: false,
async: false,
metadata: /** @type {any} */ (null) // should not be used by codegen
};
}
/**
* @param {string} name
* @param {import('estree').Statement[]} body
* @returns {import('estree').Property & { value: import('estree').FunctionExpression}}}
*/
export function get(name, body) {
return prop('get', key(name), function_builder(null, [], block(body)));
}
/**
* @param {string} name
* @returns {import('estree').Identifier}
*/
export function id(name) {
return { type: 'Identifier', name };
}
/**
* @param {string} name
* @returns {import('estree').PrivateIdentifier}
*/
export function private_id(name) {
return { type: 'PrivateIdentifier', name };
}
/**
* @param {string} local
* @returns {import('estree').ImportNamespaceSpecifier}
*/
function import_namespace(local) {
return {
type: 'ImportNamespaceSpecifier',
local: id(local)
};
}
/**
* @param {string} name
* @param {import('estree').Expression} value
* @returns {import('estree').Property}
*/
export function init(name, value) {
return prop('init', key(name), value);
}
/**
* @param {string | boolean | null | number | RegExp} value
* @returns {import('estree').Literal}
*/
export function literal(value) {
// @ts-expect-error we don't want to muck around with bigint here
return { type: 'Literal', value };
}
/**
* @param {import('estree').Expression | import('estree').Super} object
* @param {import('estree').Expression | import('estree').PrivateIdentifier} property
* @param {boolean} computed
* @param {boolean} optional
* @returns {import('estree').MemberExpression}
*/
export function member(object, property, computed = false, optional = false) {
return { type: 'MemberExpression', object, property, computed, optional };
}
/**
* @param {string} path
* @returns {import('estree').Identifier | import('estree').MemberExpression}
*/
export function member_id(path) {
const parts = path.split('.');
/** @type {import('estree').Identifier | import('estree').MemberExpression} */
let expression = id(parts[0]);
for (let i = 1; i < parts.length; i += 1) {
expression = member(expression, id(parts[i]));
}
return expression;
}
/**
* @param {Array<import('estree').Property | import('estree').SpreadElement>} properties
* @returns {import('estree').ObjectExpression}
*/
export function object(properties) {
return { type: 'ObjectExpression', properties };
}
/**
* @param {Array<import('estree').RestElement | import('estree').AssignmentProperty>} properties
* @returns {import('estree').ObjectPattern}
*/
export function object_pattern(properties) {
return { type: 'ObjectPattern', properties };
}
/**
* @template {import('estree').Expression} Value
* @param {'init' | 'get' | 'set'} kind
* @param {import('estree').Expression} key
* @param {Value} value
* @param {boolean} computed
* @returns {import('estree').Property & { value: Value }}
*/
export function prop(kind, key, value, computed = false) {
return { type: 'Property', kind, key, value, method: false, shorthand: false, computed };
}
/**
* @param {import('estree').Expression | import('estree').PrivateIdentifier} key
* @param {import('estree').Expression | null | undefined} value
* @param {boolean} computed
* @param {boolean} is_static
* @returns {import('estree').PropertyDefinition}
*/
export function prop_def(key, value, computed = false, is_static = false) {
return { type: 'PropertyDefinition', key, value, computed, static: is_static };
}
/**
* @param {string} cooked
* @param {boolean} tail
* @returns {import('estree').TemplateElement}
*/
export function quasi(cooked, tail = false) {
const raw = sanitize_template_string(cooked);
return { type: 'TemplateElement', value: { raw, cooked }, tail };
}
/**
* @param {import('estree').Pattern} argument
* @returns {import('estree').RestElement}
*/
export function rest(argument) {
return { type: 'RestElement', argument };
}
/**
* @param {import('estree').Expression[]} expressions
* @returns {import('estree').SequenceExpression}
*/
export function sequence(expressions) {
return { type: 'SequenceExpression', expressions };
}
/**
* @param {string} name
* @param {import('estree').Statement[]} body
* @returns {import('estree').Property & { value: import('estree').FunctionExpression}}
*/
export function set(name, body) {
return prop('set', key(name), function_builder(null, [id('$$value')], block(body)));
}
/**
* @param {import('estree').Expression} argument
* @returns {import('estree').SpreadElement}
*/
export function spread(argument) {
return { type: 'SpreadElement', argument };
}
/**
* @param {import('estree').Expression} expression
* @returns {import('estree').ExpressionStatement}
*/
export function stmt(expression) {
return { type: 'ExpressionStatement', expression };
}
/**
* @param {import('estree').TemplateElement[]} elements
* @param {import('estree').Expression[]} expressions
* @returns {import('estree').TemplateLiteral}
*/
export function template(elements, expressions) {
return { type: 'TemplateLiteral', quasis: elements, expressions };
}
/**
* @param {import('estree').Expression | import('estree').BlockStatement} expression
* @returns {import('estree').Expression}
*/
export function thunk(expression) {
if (
expression.type === 'CallExpression' &&
expression.callee.type !== 'Super' &&
expression.callee.type !== 'MemberExpression' &&
expression.callee.type !== 'CallExpression' &&
expression.arguments.length === 0
) {
return expression.callee;
}
return arrow([], expression);
}
/**
*
* @param {string | import('estree').Expression} expression
* @param {...import('estree').Expression} args
* @returns {import('estree').NewExpression}
*/
function new_builder(expression, ...args) {
if (typeof expression === 'string') expression = id(expression);
return {
callee: expression,
arguments: args,
type: 'NewExpression'
};
}
/**
* @param {import('estree').UpdateOperator} operator
* @param {import('estree').Expression} argument
* @param {boolean} prefix
* @returns {import('estree').UpdateExpression}
*/
export function update(operator, argument, prefix = false) {
return { type: 'UpdateExpression', operator, argument, prefix };
}
/**
* @param {import('estree').Expression} test
* @param {import('estree').Statement} body
* @returns {import('estree').DoWhileStatement}
*/
export function do_while(test, body) {
return { type: 'DoWhileStatement', test, body };
}
const true_instance = literal(true);
const false_instance = literal(false);
/** @type {import('estree').DebuggerStatement} */
const debugger_builder = {
type: 'DebuggerStatement'
};
/** @type {import('estree').ThisExpression} */
const this_instance = {
type: 'ThisExpression'
};
/**
* @param {string | import('estree').Pattern} pattern
* @param { import('estree').Expression} [init]
* @returns {import('estree').VariableDeclaration}
*/
function let_builder(pattern, init) {
return declaration('let', pattern, init);
}
/**
* @param {string | import('estree').Pattern} pattern
* @param { import('estree').Expression} init
* @returns {import('estree').VariableDeclaration}
*/
function const_builder(pattern, init) {
return declaration('const', pattern, init);
}
/**
* @param {string | import('estree').Pattern} pattern
* @param { import('estree').Expression} [init]
* @returns {import('estree').VariableDeclaration}
*/
function var_builder(pattern, init) {
return declaration('var', pattern, init);
}
/**
*
* @param {import('estree').VariableDeclaration | import('estree').Expression | null} init
* @param {import('estree').Expression} test
* @param {import('estree').Expression} update
* @param {import('estree').Statement} body
* @returns {import('estree').ForStatement}
*/
function for_builder(init, test, update, body) {
return { type: 'ForStatement', init, test, update, body };
}
/**
*
* @param {'constructor' | 'method' | 'get' | 'set'} kind
* @param {import('estree').Expression | import('estree').PrivateIdentifier} key
* @param {import('estree').Pattern[]} params
* @param {import('estree').Statement[]} body
* @param {boolean} computed
* @param {boolean} is_static
* @returns {import('estree').MethodDefinition}
*/
export function method(kind, key, params, body, computed = false, is_static = false) {
return {
type: 'MethodDefinition',
key,
kind,
value: function_builder(null, params, block(body)),
computed,
static: is_static
};
}
/**
*
* @param {import('estree').Identifier | null} id
* @param {import('estree').Pattern[]} params
* @param {import('estree').BlockStatement} body
* @returns {import('estree').FunctionExpression}
*/
function function_builder(id, params, body) {
return {
type: 'FunctionExpression',
id,
params,
body,
generator: false,
async: false,
metadata: /** @type {any} */ (null) // should not be used by codegen
};
}
/**
* @param {import('estree').Expression} test
* @param {import('estree').Statement} consequent
* @param {import('estree').Statement} [alternate]
* @returns {import('estree').IfStatement}
*/
function if_builder(test, consequent, alternate) {
return { type: 'IfStatement', test, consequent, alternate };
}
/**
* @param {string} as
* @param {string} source
* @returns {import('estree').ImportDeclaration}
*/
export function import_all(as, source) {
return {
type: 'ImportDeclaration',
source: literal(source),
specifiers: [import_namespace(as)]
};
}
/**
* @param {Array<[string, string]>} parts
* @param {string} source
* @returns {import('estree').ImportDeclaration}
*/
export function imports(parts, source) {
return {
type: 'ImportDeclaration',
source: literal(source),
specifiers: parts.map((p) => ({
type: 'ImportSpecifier',
imported: id(p[0]),
local: id(p[1])
}))
};
}
/**
* @param {import('estree').Expression | null} argument
* @returns {import('estree').ReturnStatement}
*/
function return_builder(argument = null) {
return { type: 'ReturnStatement', argument };
}
/**
* @param {string} str
* @returns {import('estree').ThrowStatement}
*/
export function throw_error(str) {
return {
type: 'ThrowStatement',
argument: new_builder('Error', literal(str))
};
}
/**
* @return {import('estree').MemberExpression}
*/
export function import_meta_hot() {
return member(
{
type: 'MetaProperty',
meta: id('import'),
property: id('meta')
},
id('hot')
);
}
export {
await_builder as await,
let_builder as let,
const_builder as const,
var_builder as var,
true_instance as true,
false_instance as false,
for_builder as for,
function_builder as function,
return_builder as return,
if_builder as if,
this_instance as this,
debugger_builder as debugger
};
/**
* @param {string} name
* @returns {import('estree').Expression}
*/
export function key(name) {
return regex_is_valid_identifier.test(name) ? id(name) : literal(name);
}
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