This commit is contained in:
Tutur33
2023-11-24 22:35:41 +01:00
parent 3c0b507a93
commit 7644b2a0f7
45165 changed files with 4803356 additions and 3 deletions
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/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/// <reference types="node"/>
declare namespace parseImports {
export type ModuleSpecifierType =
| 'invalid'
| 'absolute'
| 'relative'
| 'builtin'
| 'package'
| 'unknown'
export type Import = {
isDynamicImport: boolean
moduleSpecifier: {
type: ModuleSpecifierType
isConstant: boolean
code: string
value?: string
resolved?: string
}
importClause?: {
default?: string
named: { specifier: string; binding: string }[]
namespace?: string
}
}
export type Options = { readonly resolveFrom?: string }
}
declare const parseImports: {
(code: string, options?: parseImports.Options): Promise<
IterableIterator<parseImports.Import>
>
}
export = parseImports
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"use strict";
exports.__esModule = true;
exports.default = void 0;
var _esModuleLexer = require("es-module-lexer");
var _parseModuleSpecifier = _interopRequireDefault(require("./parse-module-specifier"));
var _parseImportClause = _interopRequireDefault(require("./parse-import-clause"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const parseImports = async (code, {
resolveFrom
} = {}) => {
const [imports] = await (0, _esModuleLexer.parse)(code, resolveFrom != null ? resolveFrom : undefined);
return function* () {
for (let {
d: dynamicImportStartIndex,
ss: statementStartIndex,
s: moduleSpecifierStartIndex,
e: moduleSpecifierEndIndexExclusive
} of imports) {
const isDynamicImport = dynamicImportStartIndex > -1; // Include string literal quotes in character range
if (!isDynamicImport) {
moduleSpecifierStartIndex--;
moduleSpecifierEndIndexExclusive++;
}
const moduleSpecifierString = code.substring(moduleSpecifierStartIndex, moduleSpecifierEndIndexExclusive);
const moduleSpecifier = (0, _parseModuleSpecifier.default)(moduleSpecifierString, {
isDynamicImport,
resolveFrom
});
let importClause;
if (!isDynamicImport) {
let importClauseString = code.substring(statementStartIndex + `import`.length, moduleSpecifierStartIndex).trim();
if (importClauseString.endsWith(`from`)) {
importClauseString = importClauseString.substring(0, importClauseString.length - `from`.length);
}
importClause = (0, _parseImportClause.default)(importClauseString);
}
yield {
isDynamicImport,
moduleSpecifier,
importClause
};
}
}();
};
var _default = parseImports;
exports.default = _default;
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"use strict";
exports.__esModule = true;
exports.default = void 0;
var _skip = require("./skip");
var _parseNamedImports = _interopRequireDefault(require("./parse-named-imports"));
var _parseNamespaceImport = _interopRequireDefault(require("./parse-namespace-import"));
var _parseDefaultImport = _interopRequireDefault(require("./parse-default-import"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Assumes import clause is syntactically valid
const parseImportClause = importClauseString => {
let defaultImport;
let namespaceImport;
const namedImports = [];
for (let i = 0; i < importClauseString.length; i++) {
if (_skip.separatorRegex.test(importClauseString[i])) {
continue;
}
if (importClauseString[i] === `{`) {
let newNamedImports;
({
namedImports: newNamedImports,
i
} = (0, _parseNamedImports.default)(importClauseString, i));
namedImports.push(...newNamedImports);
} else if (importClauseString[i] === `*`) {
;
({
namespaceImport,
i
} = (0, _parseNamespaceImport.default)(importClauseString, i));
} else {
;
({
defaultImport,
i
} = (0, _parseDefaultImport.default)(importClauseString, i));
}
}
return {
default: defaultImport,
namespace: namespaceImport,
named: namedImports
};
};
var _default = parseImportClause;
exports.default = _default;
@@ -0,0 +1,33 @@
"use strict";
exports.__esModule = true;
exports.default = void 0;
var _skip = require("./skip");
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const parseDefaultImport = (importClauseString, i) => {
const startIndex = i;
i = (0, _skip.skipNonSeparators)(importClauseString, i);
return {
defaultImport: importClauseString.substring(startIndex, i),
i
};
};
var _default = parseDefaultImport;
exports.default = _default;
@@ -0,0 +1,53 @@
"use strict";
exports.__esModule = true;
exports.default = void 0;
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const parseNamedImports = (importClauseString, i) => {
const startIndex = ++i;
while (i < importClauseString.length && importClauseString[i] !== `}`) {
i++;
}
const namedImports = importClauseString.substring(startIndex, i++).split(`,`).map(namedImport => {
namedImport = namedImport.trim();
if (namedImport.includes(` `)) {
const components = namedImport.split(` `);
return {
specifier: components[0],
binding: components[components.length - 1]
};
}
return {
specifier: namedImport,
binding: namedImport
};
}).filter(({
specifier
}) => specifier.length > 0);
return {
namedImports,
i
};
};
var _default = parseNamedImports;
exports.default = _default;
@@ -0,0 +1,37 @@
"use strict";
exports.__esModule = true;
exports.default = void 0;
var _skip = require("./skip");
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const parseNamespaceImport = (importClauseString, i) => {
i++;
i = (0, _skip.skipSeparators)(importClauseString, i);
i += `as`.length;
i = (0, _skip.skipSeparators)(importClauseString, i);
const startIndex = i;
i = (0, _skip.skipNonSeparators)(importClauseString, i);
return {
namespaceImport: importClauseString.substring(startIndex, i),
i
};
};
var _default = parseNamespaceImport;
exports.default = _default;
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"use strict";
exports.__esModule = true;
exports.skipNonSeparators = exports.skipSeparators = exports.separatorRegex = void 0;
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const separatorRegex = /^(?:\s+|,)$/u;
exports.separatorRegex = separatorRegex;
const skipSeparators = (imported, i) => {
while (i < imported.length && separatorRegex.test(imported[i])) {
i++;
}
return i;
};
exports.skipSeparators = skipSeparators;
const skipNonSeparators = (imported, i) => {
while (i < imported.length && !separatorRegex.test(imported[i])) {
i++;
}
return i;
};
exports.skipNonSeparators = skipNonSeparators;
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"use strict";
exports.__esModule = true;
exports.default = void 0;
var _slashes = require("slashes");
var _isConstantStringLiteral = _interopRequireDefault(require("./is-constant-string-literal"));
var _parseType = _interopRequireDefault(require("./parse-type"));
var _resolve = _interopRequireDefault(require("./resolve"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const parseModuleSpecifier = (moduleSpecifierString, {
isDynamicImport,
resolveFrom
}) => {
const {
isConstant,
value
} = !isDynamicImport || (0, _isConstantStringLiteral.default)(moduleSpecifierString) ? {
isConstant: true,
value: (0, _slashes.stripSlashes)(moduleSpecifierString.substring(1, moduleSpecifierString.length - 1))
} : {
isConstant: false,
value: undefined
};
return {
type: isConstant ? (0, _parseType.default)(value) : `unknown`,
isConstant,
code: moduleSpecifierString,
value,
resolved: typeof resolveFrom === `string` && isConstant ? (0, _resolve.default)(resolveFrom, value) : undefined
};
};
var _default = parseModuleSpecifier;
exports.default = _default;
@@ -0,0 +1,45 @@
"use strict";
exports.__esModule = true;
exports.default = void 0;
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Assumes the string is syntactically valid
const isConstantStringLiteral = stringLiteral => {
const quote = [`'`, `"`, `\``].find(quoteCandidate => stringLiteral.startsWith(quoteCandidate) && stringLiteral.endsWith(quoteCandidate));
if (quote == null) {
return false;
}
for (let i = 1; i < stringLiteral.length - 1; i++) {
// Check for end of string literal before end of stringLiteral
if (stringLiteral[i] === quote && stringLiteral[i - 1] !== `\\`) {
return false;
} // Check for interpolated value in template literal
if (quote === `\`` && stringLiteral.substring(i, i + 2) === `\${` && stringLiteral[i - 1] !== `\\`) {
return false;
}
}
return true;
};
var _default = isConstantStringLiteral;
exports.default = _default;
@@ -0,0 +1,48 @@
"use strict";
exports.__esModule = true;
exports.default = void 0;
var _module2 = _interopRequireDefault(require("module"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const builtinModules = new Set(_module2.default.builtinModules);
const parseType = moduleSpecifier => {
if (moduleSpecifier.length === 0) {
return `invalid`;
}
if (moduleSpecifier.startsWith(`/`)) {
return `absolute`;
}
if (moduleSpecifier.startsWith(`.`)) {
return `relative`;
}
if (builtinModules.has(moduleSpecifier)) {
return `builtin`;
}
return `package`;
};
var _default = parseType;
exports.default = _default;
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"use strict";
exports.__esModule = true;
exports.default = void 0;
var _path = require("path");
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const resolve = (from, to) => {
try {
return require.resolve(to, {
paths: [(0, _path.dirname)(from)]
});
} catch {
return undefined;
}
};
var _default = resolve;
exports.default = _default;
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/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/// <reference types="node"/>
declare namespace parseImports {
export type ModuleSpecifierType =
| 'invalid'
| 'absolute'
| 'relative'
| 'builtin'
| 'package'
| 'unknown'
export type Import = {
isDynamicImport: boolean
moduleSpecifier: {
type: ModuleSpecifierType
isConstant: boolean
code: string
value?: string
resolved?: string
}
importClause?: {
default?: string
named: { specifier: string; binding: string }[]
namespace?: string
}
}
export type Options = { readonly resolveFrom?: string }
}
declare const parseImports: {
(code: string, options?: parseImports.Options): Promise<
IterableIterator<parseImports.Import>
>
}
export = parseImports
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/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { parse } from 'es-module-lexer';
import parseModuleSpecifier from './parse-module-specifier';
import parseImportClause from './parse-import-clause';
const parseImports = async (code, {
resolveFrom
} = {}) => {
const [imports] = await parse(code, resolveFrom != null ? resolveFrom : undefined);
return function* () {
for (let {
d: dynamicImportStartIndex,
ss: statementStartIndex,
s: moduleSpecifierStartIndex,
e: moduleSpecifierEndIndexExclusive
} of imports) {
const isDynamicImport = dynamicImportStartIndex > -1; // Include string literal quotes in character range
if (!isDynamicImport) {
moduleSpecifierStartIndex--;
moduleSpecifierEndIndexExclusive++;
}
const moduleSpecifierString = code.substring(moduleSpecifierStartIndex, moduleSpecifierEndIndexExclusive);
const moduleSpecifier = parseModuleSpecifier(moduleSpecifierString, {
isDynamicImport,
resolveFrom
});
let importClause;
if (!isDynamicImport) {
let importClauseString = code.substring(statementStartIndex + `import`.length, moduleSpecifierStartIndex).trim();
if (importClauseString.endsWith(`from`)) {
importClauseString = importClauseString.substring(0, importClauseString.length - `from`.length);
}
importClause = parseImportClause(importClauseString);
}
yield {
isDynamicImport,
moduleSpecifier,
importClause
};
}
}();
};
export default parseImports;
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/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { separatorRegex } from './skip';
import parseNamedImports from './parse-named-imports';
import parseNamespaceImport from './parse-namespace-import';
import parseDefaultImport from './parse-default-import'; // Assumes import clause is syntactically valid
const parseImportClause = importClauseString => {
let defaultImport;
let namespaceImport;
const namedImports = [];
for (let i = 0; i < importClauseString.length; i++) {
if (separatorRegex.test(importClauseString[i])) {
continue;
}
if (importClauseString[i] === `{`) {
let newNamedImports;
({
namedImports: newNamedImports,
i
} = parseNamedImports(importClauseString, i));
namedImports.push(...newNamedImports);
} else if (importClauseString[i] === `*`) {
;
({
namespaceImport,
i
} = parseNamespaceImport(importClauseString, i));
} else {
;
({
defaultImport,
i
} = parseDefaultImport(importClauseString, i));
}
}
return {
default: defaultImport,
namespace: namespaceImport,
named: namedImports
};
};
export default parseImportClause;
@@ -0,0 +1,27 @@
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { skipNonSeparators } from './skip';
const parseDefaultImport = (importClauseString, i) => {
const startIndex = i;
i = skipNonSeparators(importClauseString, i);
return {
defaultImport: importClauseString.substring(startIndex, i),
i
};
};
export default parseDefaultImport;
@@ -0,0 +1,47 @@
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const parseNamedImports = (importClauseString, i) => {
const startIndex = ++i;
while (i < importClauseString.length && importClauseString[i] !== `}`) {
i++;
}
const namedImports = importClauseString.substring(startIndex, i++).split(`,`).map(namedImport => {
namedImport = namedImport.trim();
if (namedImport.includes(` `)) {
const components = namedImport.split(` `);
return {
specifier: components[0],
binding: components[components.length - 1]
};
}
return {
specifier: namedImport,
binding: namedImport
};
}).filter(({
specifier
}) => specifier.length > 0);
return {
namedImports,
i
};
};
export default parseNamedImports;
@@ -0,0 +1,31 @@
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { skipNonSeparators, skipSeparators } from './skip';
const parseNamespaceImport = (importClauseString, i) => {
i++;
i = skipSeparators(importClauseString, i);
i += `as`.length;
i = skipSeparators(importClauseString, i);
const startIndex = i;
i = skipNonSeparators(importClauseString, i);
return {
namespaceImport: importClauseString.substring(startIndex, i),
i
};
};
export default parseNamespaceImport;
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/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
export const separatorRegex = /^(?:\s+|,)$/u;
export const skipSeparators = (imported, i) => {
while (i < imported.length && separatorRegex.test(imported[i])) {
i++;
}
return i;
};
export const skipNonSeparators = (imported, i) => {
while (i < imported.length && !separatorRegex.test(imported[i])) {
i++;
}
return i;
};
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/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { stripSlashes } from 'slashes';
import isConstantStringLiteral from './is-constant-string-literal';
import parseType from './parse-type';
import resolve from './resolve';
const parseModuleSpecifier = (moduleSpecifierString, {
isDynamicImport,
resolveFrom
}) => {
const {
isConstant,
value
} = !isDynamicImport || isConstantStringLiteral(moduleSpecifierString) ? {
isConstant: true,
value: stripSlashes(moduleSpecifierString.substring(1, moduleSpecifierString.length - 1))
} : {
isConstant: false,
value: undefined
};
return {
type: isConstant ? parseType(value) : `unknown`,
isConstant,
code: moduleSpecifierString,
value,
resolved: typeof resolveFrom === `string` && isConstant ? resolve(resolveFrom, value) : undefined
};
};
export default parseModuleSpecifier;
@@ -0,0 +1,39 @@
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Assumes the string is syntactically valid
const isConstantStringLiteral = stringLiteral => {
const quote = [`'`, `"`, `\``].find(quoteCandidate => stringLiteral.startsWith(quoteCandidate) && stringLiteral.endsWith(quoteCandidate));
if (quote == null) {
return false;
}
for (let i = 1; i < stringLiteral.length - 1; i++) {
// Check for end of string literal before end of stringLiteral
if (stringLiteral[i] === quote && stringLiteral[i - 1] !== `\\`) {
return false;
} // Check for interpolated value in template literal
if (quote === `\`` && stringLiteral.substring(i, i + 2) === `\${` && stringLiteral[i - 1] !== `\\`) {
return false;
}
}
return true;
};
export default isConstantStringLiteral;
@@ -0,0 +1,39 @@
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import module from 'module';
const builtinModules = new Set(module.builtinModules);
const parseType = moduleSpecifier => {
if (moduleSpecifier.length === 0) {
return `invalid`;
}
if (moduleSpecifier.startsWith(`/`)) {
return `absolute`;
}
if (moduleSpecifier.startsWith(`.`)) {
return `relative`;
}
if (builtinModules.has(moduleSpecifier)) {
return `builtin`;
}
return `package`;
};
export default parseType;
@@ -0,0 +1,28 @@
/**
* Copyright 2020 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { dirname } from 'path';
const resolve = (from, to) => {
try {
return require.resolve(to, {
paths: [dirname(from)]
});
} catch {
return undefined;
}
};
export default resolve;
+201
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@@ -0,0 +1,201 @@
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+105
View File
@@ -0,0 +1,105 @@
{
"name": "parse-imports",
"version": "0.0.5",
"author": {
"name": "Tomer Aberbach",
"email": "tomeraberbach@gmail.com",
"url": "https://tomeraberba.ch"
},
"description": "A blazing fast ES module imports parser.",
"keywords": [
"esm",
"imports",
"module",
"parser",
"imports"
],
"homepage": "https://github.com/TomerAberbach/parse-imports",
"repository": "TomerAberbach/parse-imports",
"bugs": {
"url": "https://github.com/TomerAberbach/parse-imports/issues"
},
"license": "Apache 2.0",
"main": "dist/main/index.js",
"module": "dist/module/index.js",
"files": [
"dist"
],
"scripts": {
"license": "addlicense $(git diff --name-only HEAD)",
"lint:eslint:base": "eslint --cache --ext mjs,cjs,js --ignore-path .gitignore --ignore-pattern \"**/fixtures/**/*\"",
"lint:eslint": "pnpm run lint:eslint:base -- --fix .",
"lint:prettier:base": "prettier --loglevel silent",
"lint:prettier": "pnpm run lint:prettier:base -- --write .",
"lint": "run-s lint:*",
"test": "ava",
"build:base": "babel --delete-dir-on-start -D --no-copy-ignored --keep-file-extension --ignore \"src/**/*.test.js,src/**/fixtures/**/*\"",
"build:dev": "pnpm run build:base -- -d dist src",
"build:main": "cross-env NODE_ENV=main pnpm run build:base -- -d dist/main src",
"build:module": "cross-env NODE_ENV=module pnpm run build:base -- -d dist/module src",
"build:prod": "run-p build:main build:module",
"clean": "rimraf dist"
},
"eslintConfig": {
"extends": "@tomer"
},
"prettier": "@tomer/prettier-config",
"browserslist": [
"node >= 10"
],
"commitlint": {
"extends": "@commitlint/config-conventional"
},
"husky": {
"hooks": {
"pre-commit": "lint-staged",
"commit-msg": "commitlint -E HUSKY_GIT_PARAMS",
"pre-push": "pnpm run test"
}
},
"ava": {
"babel": true,
"require": [
"@babel/register"
],
"files": [
"**/{*.,}test.js"
]
},
"dependencies": {
"es-module-lexer": "0.3.26",
"slashes": "2.0.2"
},
"devDependencies": {
"@ava/babel": "1.0.1",
"@babel/cli": "7.12.10",
"@babel/core": "7.12.10",
"@babel/preset-env": "7.12.11",
"@babel/register": "7.12.10",
"@commitlint/cli": "11.0.0",
"@commitlint/config-conventional": "11.0.0",
"@tomer/eslint-config": "0.0.14",
"@tomer/prettier-config": "0.0.2",
"@types/node": "14.14.19",
"ava": "3.15.0",
"ava-fast-check": "4.0.0",
"babel-eslint": "10.1.0",
"babel-plugin-unassert": "3.0.1",
"babel-preset-power-assert": "3.0.0",
"command-exists": "1.2.9",
"cross-env": "7.0.3",
"eslint": "7.16.0",
"fast-check": "2.10.0",
"husky": "4.3.6",
"lint-staged": "10.5.3",
"npm-run-all": "4.1.5",
"power-assert": "1.6.1",
"prettier": "2.2.1",
"rimraf": "3.0.2",
"shift-codegen": "7.0.3",
"shift-fuzzer": "1.0.2"
},
"engines": {
"node": ">= 10"
}
}
+237
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@@ -0,0 +1,237 @@
# Parse Imports
[![NPM version](https://img.shields.io/npm/v/parse-imports.svg)](https://www.npmjs.com/package/parse-imports)
> A blazing fast ES module imports parser.
## Features
- Uses the superb WASM-based [`es-module-lexer`](https://github.com/guybedford/es-module-lexer) under the hood
- Identifies module specifier types (e.g. relative file import, package import, builtin import, etc.)
- Unescapes module specifier escape sequences
- Collects default, named, and namespace imports
- Works with dynamic imports
- Resolves module specifier paths via `require.resolve`
## Install
Supports Node.js versions 10 and above.
```sh
$ npm i parse-imports
```
## Usage
```js
import parseImports from 'parse-imports'
const code = `
import a from 'b'
import * as c from './d'
import { e as f, g as h, i } from '/j'
import k, { l as m } from 'n'
import o, * as p from "./q"
import r, { s as t, u } from "/v"
import fs from 'fs'
;(async () => {
await import("w")
await import("x" + "y")
})()
`
const main = async () => {
// Lazily iterate over iterable of imports
for (const $import of await parseImports(code)) {
console.log($import)
}
// Or get as an array of imports
const imports = [...(await parseImports(code))]
console.log(imports[0])
//=>
// {
// isDynamicImport: false,
// moduleSpecifier: {
// type: 'package',
// isConstant: true,
// code: `'b'`,
// value: 'b',
// resolved: undefined
// },
// importClause: {
// default: 'a',
// named: [],
// namespace: undefined
// }
// }
console.log(imports[1])
//=>
// {
// isDynamicImport: false,
// moduleSpecifier: {
// type: 'relative',
// isConstant: true,
// code: `'./d'`,
// value: './d',
// resolved: undefined
// },
// importClause: {
// default: undefined,
// named: [],
// namespace: 'c'
// }
// }
console.log(imports[5])
//=>
// {
// isDynamicImport: false,
// moduleSpecifier: {
// type: 'absolute',
// isConstant: true,
// code: '"/v"',
// value: '/v',
// resolved: undefined
// },
// importClause: {
// default: 'r',
// named: [
// { specifier: 's', binding: 't' },
// { specifier: 'u', binding: 'u' }
// ],
// namespace: undefined
// }
// }
console.log(imports[8])
//=>
// {
// isDynamicImport: true,
// moduleSpecifier: {
// type: 'package',
// isConstant: true,
// code: '"w"',
// value: 'w',
// resolved: undefined
// },
// importClause: undefined
// }
console.log(imports[9])
//=>
// {
// isDynamicImport: true,
// moduleSpecifier: {
// type: 'unknown',
// isConstant: false,
// code: '"x" + "y"',
// value: undefined,
// resolved: undefined
// },
// importClause: undefined
// }
}
```
## API
### `parseImports(code[, options]) -> Promise<IterableIterator<Import>>`
Returns a `Promise` resolving to a lazy [iterable](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterable_protocol)/[iterator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol) that iterates over the imports in `code`.
### Parameters
#### `code`
Type: `string`
The JavaScript code to parse for imports.
#### `options`
Type: `object` (optional)
##### Properties
###### `resolveFrom`
Type: `string` (optional)\
Default: `undefined`
If set to a file path, then `moduleSpecifier.resolved` of the returned `Import` instances will be set to the result of calling `require.resolve(moduleSpecifier.value)` from the given file path. Otherwise, will be `undefined`.
### Types
```ts
type ModuleSpecifierType =
| 'invalid'
| 'absolute'
| 'relative'
| 'builtin'
| 'package'
| 'unknown'
type Import = {
isDynamicImport: boolean
moduleSpecifier: {
type: ModuleSpecifierType
isConstant: boolean
code: string
value?: string
resolved?: string
}
importClause?: {
default?: string
named: string[]
namespace?: string
}
}
```
#### `Import`
`moduleSpecifier.isConstant` is `true` when the import is not a dynamic import (`isDynamicImport` is `false`), or when
the import is a dynamic import where the specifier is a simple string literal (e.g. `import('fs')`, `import("fs")`, `` import(`fs`) ``).
If `moduleSpecifier.isConstant` is `false`, then `moduleSpecifier.type` is `'unknown'`. Otherwise, it is set according to the following rules:
- `'invalid'` if the module specifier is the empty string
- `'absolute'` if the module specifier is an absolute file path
- `'relative'` if the module specifier is a relative file path
- `'builtin'` if the module specifier is the name of a builtin Node.js package
- `'package'` otherwise
`moduleSpecifier.code` is the module specifier as it was written in the code. For non-constant dynamic imports it could be a complex expression.
`moduleSpecifier.value` is `moduleSpecifier.code` without string literal quotes and unescaped if `moduleSpecifier.isConstant` is `true`. Otherwise, it is `undefined`.
`moduleSpecifier.resolved` is set if the `resolveFrom` option is set and `moduleSpecifier.value` is not `undefined`.
`importClause` is only `undefined` if `isDynamicImport` is `true`.
`importClause.default` is the default import identifier or `undefined` if the import statement does not have a default import.
`importClause.named` is the array of objects representing the named imports of the import statement. It is empty if the import
statement does not have any named imports. Each object in the array has a `specifier` field set to the imported identifier and a
`binding` field set to the identifier for accessing the imported value. For example, `import { a, x as y } from 'something'` would have the following
array for `importClause.named`: `[{ specifier: 'a', binding: 'a' }, { specifier: 'x', binding: 'y' }]`.
`importClause.namespace` is the namespace import identifier or `undefined` if the import statement does not have a namespace import.
## Contributing
Stars are always welcome!
For bugs and feature requests, [please create an issue](https://github.com/TomerAberbach/parse-imports/issues/new).
For pull requests, please read the [contributing guidelines](https://github.com/TomerAberbach/parse-imports/blob/master/contributing.md).
## License
[Apache 2.0](https://github.com/TomerAberbach/parse-imports/blob/master/license)
This is not an official Google product.