projen
Version:
CDK for software projects
109 lines • 15.2 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.synthSnapshot = synthSnapshot;
exports.directorySnapshot = directorySnapshot;
const fs = require("fs");
const os = require("os");
const path = require("path");
const JSONC = require("comment-json");
const comment_json_1 = require("comment-json");
const glob = require("fast-glob");
const json_1 = require("../json");
/**
* Creates a snapshot of the files generated by a project. Ignores any non-text
* files so that the snapshots are human readable.
*/
function synthSnapshot(project, options = {}) {
// defensive: verify that "outdir" is actually in a temporary directory
if (!path.resolve(project.outdir).startsWith(os.tmpdir()) &&
!project.outdir.includes("project-temp-dir")) {
throw new Error("Trying to capture a snapshot of a project outside of tmpdir, which implies this test might corrupt an existing project");
}
const synthed = Symbol.for("synthed");
if (synthed in project) {
throw new Error("duplicate synth()");
}
project[synthed] = true;
const ENV_PROJEN_DISABLE_POST = process.env.PROJEN_DISABLE_POST;
try {
process.env.PROJEN_DISABLE_POST = "true";
project.synth();
const ignoreExts = ["png", "ico"];
return directorySnapshot(project.outdir, {
...options,
excludeGlobs: ignoreExts.map((ext) => `**/*.${ext}`),
supportJsonComments: project.files.some(
// At least one json file in project supports comments
(file) => file instanceof json_1.JsonFile && file.supportsComments),
});
}
finally {
fs.rmSync(project.outdir, { force: true, recursive: true });
// values assigned to process.env.XYZ are automatically converted to strings
if (ENV_PROJEN_DISABLE_POST === undefined) {
delete process.env.PROJEN_DISABLE_POST;
}
else {
process.env.PROJEN_DISABLE_POST = ENV_PROJEN_DISABLE_POST;
}
}
}
function isJsonLikeFile(filePath) {
const file = filePath.toLowerCase();
return (file.endsWith(".json") || file.endsWith(".json5") || file.endsWith(".jsonc"));
}
function directorySnapshot(root, options = {}) {
const output = {};
const files = glob.sync("**", {
ignore: [".git/**", ...(options.excludeGlobs ?? [])],
cwd: root,
onlyFiles: true,
followSymbolicLinks: false,
dot: true,
}); // returns relative file paths with POSIX separators
const parseJson = options.parseJson ?? true;
for (const file of files) {
const filePath = path.join(root, file);
let content;
if (!options.onlyFileNames) {
content = fs.readFileSync(filePath, "utf-8");
if (parseJson && isJsonLikeFile(filePath)) {
content = cleanCommentArrays(JSONC.parse(content, undefined, !options.supportJsonComments));
}
}
else {
content = true;
}
output[file] = content;
}
return output;
}
/**
* Converts type "CommentArray" back to regular JS "Array"
* if there are no comments stored in it.
* Prevents strict checks from failing.
*/
function cleanCommentArrays(obj) {
if (Array.isArray(obj) || isCommentArrayWithoutComments(obj)) {
return Array.from(obj).map(cleanCommentArrays);
}
if (obj instanceof Object) {
for (const p of Object.keys(obj)) {
if (isCommentArrayWithoutComments(obj[p])) {
obj[p] = Array.from(obj[p]).map(cleanCommentArrays);
}
else if (obj[p] instanceof Object) {
obj[p] = cleanCommentArrays(obj[p]);
}
}
}
return obj;
}
/**
* Checks if a "CommentArray" has no comments stored in it.
*/
function isCommentArrayWithoutComments(obj) {
return (obj instanceof comment_json_1.CommentArray &&
Object.getOwnPropertySymbols(obj).length === 0);
}
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Ignores any non-text\n * files so that the snapshots are human readable.\n */\nexport function synthSnapshot(\n  project: Project,\n  options: SnapshotOptions = {}\n): SynthOutput {\n  // defensive: verify that \"outdir\" is actually in a temporary directory\n  if (\n    !path.resolve(project.outdir).startsWith(os.tmpdir()) &&\n    !project.outdir.includes(\"project-temp-dir\")\n  ) {\n    throw new Error(\n      \"Trying to capture a snapshot of a project outside of tmpdir, which implies this test might corrupt an existing project\"\n    );\n  }\n\n  const synthed = Symbol.for(\"synthed\");\n  if (synthed in project) {\n    throw new Error(\"duplicate synth()\");\n  }\n\n  (project as any)[synthed] = true;\n\n  const ENV_PROJEN_DISABLE_POST = process.env.PROJEN_DISABLE_POST;\n  try {\n    process.env.PROJEN_DISABLE_POST = \"true\";\n    project.synth();\n    const ignoreExts = [\"png\", \"ico\"];\n    return directorySnapshot(project.outdir, {\n      ...options,\n      excludeGlobs: ignoreExts.map((ext) => `**/*.${ext}`),\n      supportJsonComments: project.files.some(\n        // At least one json file in project supports comments\n        (file) => file instanceof JsonFile && file.supportsComments\n      ),\n    });\n  } finally {\n    fs.rmSync(project.outdir, { force: true, recursive: true });\n\n    // values assigned to process.env.XYZ are automatically converted to strings\n    if (ENV_PROJEN_DISABLE_POST === undefined) {\n      delete process.env.PROJEN_DISABLE_POST;\n    } else {\n      process.env.PROJEN_DISABLE_POST = ENV_PROJEN_DISABLE_POST;\n    }\n  }\n}\n\nexport interface DirectorySnapshotOptions extends SnapshotOptions {\n  /**\n   * Globs of files to exclude.\n   * @default [] include all files\n   */\n  readonly excludeGlobs?: string[];\n\n  /**\n   * Only snapshot the names of files and not their contents.\n   * The value for a path will be `true` if it exists.\n   *\n   * @default false include file content\n   */\n  readonly onlyFileNames?: boolean;\n\n  /**\n   * Parses files with different parser, supporting comments\n   * inside .json files.\n   * @default false\n   */\n  readonly supportJsonComments?: boolean;\n}\n\nfunction isJsonLikeFile(filePath: string): boolean {\n  const file = filePath.toLowerCase();\n  return (\n    file.endsWith(\".json\") || file.endsWith(\".json5\") || file.endsWith(\".jsonc\")\n  );\n}\n\nexport function directorySnapshot(\n  root: string,\n  options: DirectorySnapshotOptions = {}\n) {\n  const output: SynthOutput = {};\n\n  const files = glob.sync(\"**\", {\n    ignore: [\".git/**\", ...(options.excludeGlobs ?? [])],\n    cwd: root,\n    onlyFiles: true,\n    followSymbolicLinks: false,\n    dot: true,\n  }); // returns relative file paths with POSIX separators\n\n  const parseJson = options.parseJson ?? true;\n\n  for (const file of files) {\n    const filePath = path.join(root, file);\n\n    let content;\n    if (!options.onlyFileNames) {\n      content = fs.readFileSync(filePath, \"utf-8\");\n      if (parseJson && isJsonLikeFile(filePath)) {\n        content = cleanCommentArrays(\n          JSONC.parse(content, undefined, !options.supportJsonComments)\n        );\n      }\n    } else {\n      content = true;\n    }\n\n    output[file] = content;\n  }\n\n  return output;\n}\n\n/**\n * Converts type \"CommentArray\" back to regular JS \"Array\"\n * if there are no comments stored in it.\n * Prevents strict checks from failing.\n */\nfunction cleanCommentArrays(obj: any): typeof obj {\n  if (Array.isArray(obj) || isCommentArrayWithoutComments(obj)) {\n    return Array.from(obj).map(cleanCommentArrays);\n  }\n\n  if (obj instanceof Object) {\n    for (const p of Object.keys(obj)) {\n      if (isCommentArrayWithoutComments(obj[p])) {\n        obj[p] = Array.from(obj[p]).map(cleanCommentArrays);\n      } else if (obj[p] instanceof Object) {\n        obj[p] = cleanCommentArrays(obj[p]);\n      }\n    }\n  }\n\n  return obj;\n}\n\n/**\n * Checks if a \"CommentArray\" has no comments stored in it.\n */\nfunction isCommentArrayWithoutComments(obj: any): boolean {\n  return (\n    obj instanceof CommentArray &&\n    Object.getOwnPropertySymbols(obj).length === 0\n  );\n}\n"]}