@harperfast/extended-iterable - npm Package Compare versions

Comparing version 1.0.2 to 1.0.3

dist/index.cjs

+'use strict';
+
+const SKIP = Symbol.for('@harperdb/extended-iterable:skip');
+const DONE = {
+	value: null,
+	done: true,
+};
+const RETURN_DONE = {
+	// we allow this one to be mutated
+	value: null,
+	done: true,
+};
+if (!Symbol.asyncIterator) {
+	Symbol.asyncIterator = Symbol.for('Symbol.asyncIterator');
+}
+const NO_OPTIONS = {};
+
+class ExtendedIterable {
+	constructor(sourceArray) {
+		if (sourceArray) {
+			this.iterate = sourceArray[Symbol.iterator].bind(sourceArray);
+		}
+	}
+	map(func) {
+		let source = this;
+		let iterable = new ExtendedIterable();
+		iterable.iterate = (options = NO_OPTIONS) => {
+			const { async } = options;
+			let iterator =
+				source[async ? Symbol.asyncIterator : Symbol.iterator](options);
+			if (!async) source.isSync = true;
+			let i = -1;
+			return {
+				next(resolvedResult) {
+					let result;
+					do {
+						let iteratorResult;
+						try {
+							if (resolvedResult) {
+								iteratorResult = resolvedResult;
+								resolvedResult = null; // don't go in this branch on next iteration
+							} else {
+								i++;
+								iteratorResult = iterator.next();
+								if (iteratorResult.then) {
+									if (!async) {
+										this.throw(
+											new Error(
+												'Can not synchronously iterate with promises as iterator results',
+											),
+										);
+									}
+									return iteratorResult.then(
+										(iteratorResult) => this.next(iteratorResult),
+										(error) => {
+											return this.throw(error);
+										},
+									);
+								}
+							}
+							if (iteratorResult.done === true) {
+								this.done = true;
+								if (iterable.onDone) iterable.onDone();
+								return iteratorResult;
+							}
+							try {
+								result = func.call(source, iteratorResult.value, i);
+								if (result && result.then && async) {
+									// if async, wait for promise to resolve before returning iterator result
+									return result.then(
+										(result) =>
+											result === SKIP
+												? this.next()
+												: {
+														value: result,
+													},
+										(error) => {
+											if (options.continueOnRecoverableError)
+												error.continueIteration = true;
+											return this.throw(error);
+										},
+									);
+								}
+							} catch (error) {
+								// if the error came from the user function, we can potentially mark it for continuing iteration
+								if (options.continueOnRecoverableError)
+									error.continueIteration = true;
+								throw error; // throw to next catch to handle
+							}
+						} catch (error) {
+							if (iterable.handleError) {
+								// if we have handleError, we can use it to further handle errors
+								try {
+									result = iterable.handleError(error, i);
+								} catch (error2) {
+									return this.throw(error2);
+								}
+							} else return this.throw(error);
+						}
+					} while (result === SKIP);
+					if (result === DONE) {
+						return this.return();
+					}
+					return {
+						value: result,
+					};
+				},
+				return(value) {
+					if (!this.done) {
+						RETURN_DONE.value = value;
+						this.done = true;
+						if (iterable.onDone) iterable.onDone();
+						iterator.return?.();
+					}
+					return RETURN_DONE;
+				},
+				throw(error) {
+					if (error.continueIteration) {
+						// if it's a recoverable error, we can return or throw without closing the iterator
+						if (iterable.returnRecoverableErrors)
+							try {
+								return {
+									value: iterable.returnRecoverableErrors(error),
+								};
+							} catch (error) {
+								// if this throws, we need to go back to closing the iterator
+								this.return();
+								throw error;
+							}
+						if (options.continueOnRecoverableError) throw error; // throw without closing iterator
+					}
+					// else we are done with the iterator (and can throw)
+					this.return();
+					throw error;
+				},
+			};
+		};
+		return iterable;
+	}
+	[Symbol.asyncIterator](options) {
+		if (options) options = { ...options, async: true };
+		else options = { async: true };
+		return (this.iterator = this.iterate(options));
+	}
+	[Symbol.iterator](options) {
+		return (this.iterator = this.iterate(options));
+	}
+	filter(func) {
+		let iterable = this.map((element) => {
+			let result = func(element);
+			// handle promise
+			if (result?.then)
+				return result.then((result) => (result ? element : SKIP));
+			else return result ? element : SKIP;
+		});
+		let iterate = iterable.iterate;
+		iterable.iterate = (options = NO_OPTIONS) => {
+			// explicitly prevent continue on recoverable error with filter
+			if (options.continueOnRecoverableError)
+				options = { ...options, continueOnRecoverableError: false };
+			return iterate(options);
+		};
+		return iterable;
+	}
+
+	forEach(callback) {
+		let iterator = (this.iterator = this.iterate());
+		let result;
+		while ((result = iterator.next()).done !== true) {
+			callback(result.value);
+		}
+	}
+	concat(secondIterable) {
+		let concatIterable = new ExtendedIterable();
+		concatIterable.iterate = (options = NO_OPTIONS) => {
+			let iterator = (this.iterator = this.iterate(options));
+			let isFirst = true;
+			function iteratorDone(result) {
+				if (isFirst) {
+					try {
+						isFirst = false;
+						iterator =
+							secondIterable[
+								options.async ? Symbol.asyncIterator : Symbol.iterator
+							]();
+						result = iterator.next();
+						if (concatIterable.onDone) {
+							if (result.then) {
+								if (!options.async)
+									throw new Error(
+										'Can not synchronously iterate with promises as iterator results',
+									);
+								result.then(
+									(result) => {
+										if (result.done()) concatIterable.onDone();
+									},
+									(error) => {
+										this.return();
+										throw error;
+									},
+								);
+							} else if (result.done) concatIterable.onDone();
+						}
+					} catch (error) {
+						this.throw(error);
+					}
+				} else {
+					if (concatIterable.onDone) concatIterable.onDone();
+				}
+				return result;
+			}
+			return {
+				next() {
+					try {
+						let result = iterator.next();
+						if (result.then) {
+							if (!options.async)
+								throw new Error(
+									'Can not synchronously iterate with promises as iterator results',
+								);
+							return result.then((result) => {
+								if (result.done) return iteratorDone(result);
+								return result;
+							});
+						}
+						if (result.done) return iteratorDone(result);
+						return result;
+					} catch (error) {
+						this.throw(error);
+					}
+				},
+				return(value) {
+					if (!this.done) {
+						RETURN_DONE.value = value;
+						this.done = true;
+						if (concatIterable.onDone) concatIterable.onDone();
+						iterator.return();
+					}
+					return RETURN_DONE;
+				},
+				throw(error) {
+					if (options.continueOnRecoverableError) throw error;
+					this.return();
+					throw error;
+				},
+			};
+		};
+		return concatIterable;
+	}
+
+	flatMap(callback) {
+		let mappedIterable = new ExtendedIterable();
+		mappedIterable.iterate = (options = NO_OPTIONS) => {
+			let iterator = (this.iterator = this.iterate(options));
+			let currentSubIterator;
+			return {
+				next(resolvedResult) {
+					try {
+						do {
+							if (currentSubIterator) {
+								let result;
+								if (resolvedResult) {
+									result = resolvedResult;
+									resolvedResult = undefined;
+								} else result = currentSubIterator.next();
+								if (result.then) {
+									if (!options.async)
+										throw new Error(
+											'Can not synchronously iterate with promises as iterator results',
+										);
+									return result.then((result) => this.next(result));
+								}
+								if (!result.done) {
+									return result;
+								}
+							}
+							let result;
+							if (resolvedResult != undefined) {
+								result = resolvedResult;
+								resolvedResult = undefined;
+							} else result = iterator.next();
+							if (result.then) {
+								if (!options.async)
+									throw new Error(
+										'Can not synchronously iterate with promises as iterator results',
+									);
+								currentSubIterator = undefined;
+								return result.then((result) => this.next(result));
+							}
+							if (result.done) {
+								if (mappedIterable.onDone) mappedIterable.onDone();
+								return result;
+							}
+							try {
+								let value = callback(result.value);
+								if (value?.then) {
+									if (!options.async)
+										throw new Error(
+											'Can not synchronously iterate with promises as iterator results',
+										);
+									return value.then(
+										(value) => {
+											if (
+												Array.isArray(value) ||
+												value instanceof ExtendedIterable
+											) {
+												currentSubIterator = value[Symbol.iterator]();
+												return this.next();
+											} else {
+												currentSubIterator = null;
+												return { value };
+											}
+										},
+										(error) => {
+											if (options.continueOnRecoverableError)
+												error.continueIteration = true;
+											this.throw(error);
+										},
+									);
+								}
+								if (Array.isArray(value) || value instanceof ExtendedIterable)
+									currentSubIterator = value[Symbol.iterator]();
+								else {
+									currentSubIterator = null;
+									return { value };
+								}
+							} catch (error) {
+								if (options.continueOnRecoverableError)
+									error.continueIteration = true;
+								throw error;
+							}
+						} while (true);
+					} catch (error) {
+						this.throw(error);
+					}
+				},
+				return() {
+					if (mappedIterable.onDone) mappedIterable.onDone();
+					if (currentSubIterator) currentSubIterator.return();
+					return iterator.return();
+				},
+				throw(error) {
+					if (options.continueOnRecoverableError) throw error;
+					if (mappedIterable.onDone) mappedIterable.onDone();
+					if (currentSubIterator) currentSubIterator.return();
+					this.return();
+					throw error;
+				},
+			};
+		};
+		return mappedIterable;
+	}
+
+	slice(start, end) {
+		let iterable = this.map((element, i) => {
+			if (i < start) return SKIP;
+			if (i >= end) {
+				DONE.value = element;
+				return DONE;
+			}
+			return element;
+		});
+		iterable.handleError = (error, i) => {
+			if (i < start) return SKIP;
+			if (i >= end) {
+				return DONE;
+			}
+			throw error;
+		};
+		return iterable;
+	}
+	mapError(catch_callback) {
+		if (typeof catch_callback !== 'function') {
+			throw new TypeError('Expected catch callback to be a function');
+		}
+		let iterable = this.map((element) => {
+			return element;
+		});
+		let iterate = iterable.iterate;
+		iterable.iterate = (options = NO_OPTIONS) => {
+			// we need to ensure the whole stack
+			// of iterables is set up to handle recoverable errors and continue iteration
+			return iterate({ ...options, continueOnRecoverableError: true });
+		};
+		iterable.returnRecoverableErrors = catch_callback;
+		return iterable;
+	}
+	next() {
+		if (!this.iterator) this.iterator = this.iterate();
+		return this.iterator.next();
+	}
+	toJSON() {
+		if (this.asArray && this.asArray.forEach) {
+			return this.asArray;
+		}
+		const error = new Error(
+			'Can not serialize async iterables without first calling resolving asArray',
+		);
+		error.resolution = this.asArray;
+		throw error;
+		//return Array.from(this)
+	}
+	get asArray() {
+		if (this._asArray) return this._asArray;
+		let promise = new Promise((resolve, reject) => {
+			let iterator = this.iterate(true);
+			let array = [];
+			let iterable = this;
+			Object.defineProperty(array, 'iterable', { value: iterable });
+			function next(result) {
+				while (result.done !== true) {
+					if (result.then) {
+						return result.then(next);
+					} else {
+						array.push(result.value);
+					}
+					result = iterator.next();
+				}
+				resolve((iterable._asArray = array));
+			}
+			next(iterator.next());
+		});
+		promise.iterable = this;
+		return this._asArray || (this._asArray = promise);
+	}
+	resolveData() {
+		return this.asArray;
+	}
+	at(index) {
+		for (let entry of this) {
+			if (index-- === 0) return entry;
+		}
+	}
+}
+ExtendedIterable.prototype.DONE = DONE;
+
+exports.ExtendedIterable = ExtendedIterable;
+exports.SKIP = SKIP;
+//# sourceMappingURL=index.cjs.map

dist/index.cjs.map

+{"version":3,"file":"index.cjs","sources":["../index.js"],"sourcesContent":["export const SKIP = Symbol.for('@harperdb/extended-iterable:skip');\nconst DONE = {\n\tvalue: null,\n\tdone: true,\n};\nconst RETURN_DONE = {\n\t// we allow this one to be mutated\n\tvalue: null,\n\tdone: true,\n};\nif (!Symbol.asyncIterator) {\n\tSymbol.asyncIterator = Symbol.for('Symbol.asyncIterator');\n}\nconst NO_OPTIONS = {};\n\nexport class ExtendedIterable {\n\tconstructor(sourceArray) {\n\t\tif (sourceArray) {\n\t\t\tthis.iterate = sourceArray[Symbol.iterator].bind(sourceArray);\n\t\t}\n\t}\n\tmap(func) {\n\t\tlet source = this;\n\t\tlet iterable = new ExtendedIterable();\n\t\titerable.iterate = (options = NO_OPTIONS) => {\n\t\t\tconst { async } = options;\n\t\t\tlet iterator =\n\t\t\t\tsource[async ? Symbol.asyncIterator : Symbol.iterator](options);\n\t\t\tif (!async) source.isSync = true;\n\t\t\tlet i = -1;\n\t\t\treturn {\n\t\t\t\tnext(resolvedResult) {\n\t\t\t\t\tlet result;\n\t\t\t\t\tdo {\n\t\t\t\t\t\tlet iteratorResult;\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (resolvedResult) {\n\t\t\t\t\t\t\t\titeratorResult = resolvedResult;\n\t\t\t\t\t\t\t\tresolvedResult = null; // don't go in this branch on next iteration\n\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\ti++;\n\t\t\t\t\t\t\t\titeratorResult = iterator.next();\n\t\t\t\t\t\t\t\tif (iteratorResult.then) {\n\t\t\t\t\t\t\t\t\tif (!async) {\n\t\t\t\t\t\t\t\t\t\tthis.throw(\n\t\t\t\t\t\t\t\t\t\t\tnew Error(\n\t\t\t\t\t\t\t\t\t\t\t\t'Can not synchronously iterate with promises as iterator results',\n\t\t\t\t\t\t\t\t\t\t\t),\n\t\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\treturn iteratorResult.then(\n\t\t\t\t\t\t\t\t\t\t(iteratorResult) => this.next(iteratorResult),\n\t\t\t\t\t\t\t\t\t\t(error) => {\n\t\t\t\t\t\t\t\t\t\t\treturn this.throw(error);\n\t\t\t\t\t\t\t\t\t\t},\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\tif (iteratorResult.done === true) {\n\t\t\t\t\t\t\t\tthis.done = true;\n\t\t\t\t\t\t\t\tif (iterable.onDone) iterable.onDone();\n\t\t\t\t\t\t\t\treturn iteratorResult;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tresult = func.call(source, iteratorResult.value, i);\n\t\t\t\t\t\t\t\tif (result && result.then && async) {\n\t\t\t\t\t\t\t\t\t// if async, wait for promise to resolve before returning iterator result\n\t\t\t\t\t\t\t\t\treturn result.then(\n\t\t\t\t\t\t\t\t\t\t(result) =>\n\t\t\t\t\t\t\t\t\t\t\tresult === SKIP\n\t\t\t\t\t\t\t\t\t\t\t\t? this.next()\n\t\t\t\t\t\t\t\t\t\t\t\t: {\n\t\t\t\t\t\t\t\t\t\t\t\t\t\tvalue: result,\n\t\t\t\t\t\t\t\t\t\t\t\t\t},\n\t\t\t\t\t\t\t\t\t\t(error) => {\n\t\t\t\t\t\t\t\t\t\t\tif (options.continueOnRecoverableError)\n\t\t\t\t\t\t\t\t\t\t\t\terror.continueIteration = true;\n\t\t\t\t\t\t\t\t\t\t\treturn this.throw(error);\n\t\t\t\t\t\t\t\t\t\t},\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} catch (error) {\n\t\t\t\t\t\t\t\t// if the error came from the user function, we can potentially mark it for continuing iteration\n\t\t\t\t\t\t\t\tif (options.continueOnRecoverableError)\n\t\t\t\t\t\t\t\t\terror.continueIteration = true;\n\t\t\t\t\t\t\t\tthrow error; // throw to next catch to handle\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} catch (error) {\n\t\t\t\t\t\t\tif (iterable.handleError) {\n\t\t\t\t\t\t\t\t// if we have handleError, we can use it to further handle errors\n\t\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\t\tresult = iterable.handleError(error, i);\n\t\t\t\t\t\t\t\t} catch (error2) {\n\t\t\t\t\t\t\t\t\treturn this.throw(error2);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} else return this.throw(error);\n\t\t\t\t\t\t}\n\t\t\t\t\t} while (result === SKIP);\n\t\t\t\t\tif (result === DONE) {\n\t\t\t\t\t\treturn this.return();\n\t\t\t\t\t}\n\t\t\t\t\treturn {\n\t\t\t\t\t\tvalue: result,\n\t\t\t\t\t};\n\t\t\t\t},\n\t\t\t\treturn(value) {\n\t\t\t\t\tif (!this.done) {\n\t\t\t\t\t\tRETURN_DONE.value = value;\n\t\t\t\t\t\tthis.done = true;\n\t\t\t\t\t\tif (iterable.onDone) iterable.onDone();\n\t\t\t\t\t\titerator.return?.();\n\t\t\t\t\t}\n\t\t\t\t\treturn RETURN_DONE;\n\t\t\t\t},\n\t\t\t\tthrow(error) {\n\t\t\t\t\tif (error.continueIteration) {\n\t\t\t\t\t\t// if it's a recoverable error, we can return or throw without closing the iterator\n\t\t\t\t\t\tif (iterable.returnRecoverableErrors)\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\treturn {\n\t\t\t\t\t\t\t\t\tvalue: iterable.returnRecoverableErrors(error),\n\t\t\t\t\t\t\t\t};\n\t\t\t\t\t\t\t} catch (error) {\n\t\t\t\t\t\t\t\t// if this throws, we need to go back to closing the iterator\n\t\t\t\t\t\t\t\tthis.return();\n\t\t\t\t\t\t\t\tthrow error;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\tif (options.continueOnRecoverableError) throw error; // throw without closing iterator\n\t\t\t\t\t}\n\t\t\t\t\t// else we are done with the iterator (and can throw)\n\t\t\t\t\tthis.return();\n\t\t\t\t\tthrow error;\n\t\t\t\t},\n\t\t\t};\n\t\t};\n\t\treturn iterable;\n\t}\n\t[Symbol.asyncIterator](options) {\n\t\tif (options) options = { ...options, async: true };\n\t\telse options = { async: true };\n\t\treturn (this.iterator = this.iterate(options));\n\t}\n\t[Symbol.iterator](options) {\n\t\treturn (this.iterator = this.iterate(options));\n\t}\n\tfilter(func) {\n\t\tlet iterable = this.map((element) => {\n\t\t\tlet result = func(element);\n\t\t\t// handle promise\n\t\t\tif (result?.then)\n\t\t\t\treturn result.then((result) => (result ? element : SKIP));\n\t\t\telse return result ? element : SKIP;\n\t\t});\n\t\tlet iterate = iterable.iterate;\n\t\titerable.iterate = (options = NO_OPTIONS) => {\n\t\t\t// explicitly prevent continue on recoverable error with filter\n\t\t\tif (options.continueOnRecoverableError)\n\t\t\t\toptions = { ...options, continueOnRecoverableError: false };\n\t\t\treturn iterate(options);\n\t\t};\n\t\treturn iterable;\n\t}\n\n\tforEach(callback) {\n\t\tlet iterator = (this.iterator = this.iterate());\n\t\tlet result;\n\t\twhile ((result = iterator.next()).done !== true) {\n\t\t\tcallback(result.value);\n\t\t}\n\t}\n\tconcat(secondIterable) {\n\t\tlet concatIterable = new ExtendedIterable();\n\t\tconcatIterable.iterate = (options = NO_OPTIONS) => {\n\t\t\tlet iterator = (this.iterator = this.iterate(options));\n\t\t\tlet isFirst = true;\n\t\t\tfunction iteratorDone(result) {\n\t\t\t\tif (isFirst) {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tisFirst = false;\n\t\t\t\t\t\titerator =\n\t\t\t\t\t\t\tsecondIterable[\n\t\t\t\t\t\t\t\toptions.async ? Symbol.asyncIterator : Symbol.iterator\n\t\t\t\t\t\t\t]();\n\t\t\t\t\t\tresult = iterator.next();\n\t\t\t\t\t\tif (concatIterable.onDone) {\n\t\t\t\t\t\t\tif (result.then) {\n\t\t\t\t\t\t\t\tif (!options.async)\n\t\t\t\t\t\t\t\t\tthrow new Error(\n\t\t\t\t\t\t\t\t\t\t'Can not synchronously iterate with promises as iterator results',\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\tresult.then(\n\t\t\t\t\t\t\t\t\t(result) => {\n\t\t\t\t\t\t\t\t\t\tif (result.done()) concatIterable.onDone();\n\t\t\t\t\t\t\t\t\t},\n\t\t\t\t\t\t\t\t\t(error) => {\n\t\t\t\t\t\t\t\t\t\tthis.return();\n\t\t\t\t\t\t\t\t\t\tthrow error;\n\t\t\t\t\t\t\t\t\t},\n\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t} else if (result.done) concatIterable.onDone();\n\t\t\t\t\t\t}\n\t\t\t\t\t} catch (error) {\n\t\t\t\t\t\tthis.throw(error);\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tif (concatIterable.onDone) concatIterable.onDone();\n\t\t\t\t}\n\t\t\t\treturn result;\n\t\t\t}\n\t\t\treturn {\n\t\t\t\tnext() {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tlet result = iterator.next();\n\t\t\t\t\t\tif (result.then) {\n\t\t\t\t\t\t\tif (!options.async)\n\t\t\t\t\t\t\t\tthrow new Error(\n\t\t\t\t\t\t\t\t\t'Can not synchronously iterate with promises as iterator results',\n\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\treturn result.then((result) => {\n\t\t\t\t\t\t\t\tif (result.done) return iteratorDone(result);\n\t\t\t\t\t\t\t\treturn result;\n\t\t\t\t\t\t\t});\n\t\t\t\t\t\t}\n\t\t\t\t\t\tif (result.done) return iteratorDone(result);\n\t\t\t\t\t\treturn result;\n\t\t\t\t\t} catch (error) {\n\t\t\t\t\t\tthis.throw(error);\n\t\t\t\t\t}\n\t\t\t\t},\n\t\t\t\treturn(value) {\n\t\t\t\t\tif (!this.done) {\n\t\t\t\t\t\tRETURN_DONE.value = value;\n\t\t\t\t\t\tthis.done = true;\n\t\t\t\t\t\tif (concatIterable.onDone) concatIterable.onDone();\n\t\t\t\t\t\titerator.return();\n\t\t\t\t\t}\n\t\t\t\t\treturn RETURN_DONE;\n\t\t\t\t},\n\t\t\t\tthrow(error) {\n\t\t\t\t\tif (options.continueOnRecoverableError) throw error;\n\t\t\t\t\tthis.return();\n\t\t\t\t\tthrow error;\n\t\t\t\t},\n\t\t\t};\n\t\t};\n\t\treturn concatIterable;\n\t}\n\n\tflatMap(callback) {\n\t\tlet mappedIterable = new ExtendedIterable();\n\t\tmappedIterable.iterate = (options = NO_OPTIONS) => {\n\t\t\tlet iterator = (this.iterator = this.iterate(options));\n\t\t\tlet isFirst = true;\n\t\t\tlet currentSubIterator;\n\t\t\treturn {\n\t\t\t\tnext(resolvedResult) {\n\t\t\t\t\ttry {\n\t\t\t\t\t\tdo {\n\t\t\t\t\t\t\tif (currentSubIterator) {\n\t\t\t\t\t\t\t\tlet result;\n\t\t\t\t\t\t\t\tif (resolvedResult) {\n\t\t\t\t\t\t\t\t\tresult = resolvedResult;\n\t\t\t\t\t\t\t\t\tresolvedResult = undefined;\n\t\t\t\t\t\t\t\t} else result = currentSubIterator.next();\n\t\t\t\t\t\t\t\tif (result.then) {\n\t\t\t\t\t\t\t\t\tif (!options.async)\n\t\t\t\t\t\t\t\t\t\tthrow new Error(\n\t\t\t\t\t\t\t\t\t\t\t'Can not synchronously iterate with promises as iterator results',\n\t\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t\treturn result.then((result) => this.next(result));\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\tif (!result.done) {\n\t\t\t\t\t\t\t\t\treturn result;\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\tlet result;\n\t\t\t\t\t\t\tif (resolvedResult != undefined) {\n\t\t\t\t\t\t\t\tresult = resolvedResult;\n\t\t\t\t\t\t\t\tresolvedResult = undefined;\n\t\t\t\t\t\t\t} else result = iterator.next();\n\t\t\t\t\t\t\tif (result.then) {\n\t\t\t\t\t\t\t\tif (!options.async)\n\t\t\t\t\t\t\t\t\tthrow new Error(\n\t\t\t\t\t\t\t\t\t\t'Can not synchronously iterate with promises as iterator results',\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\tcurrentSubIterator = undefined;\n\t\t\t\t\t\t\t\treturn result.then((result) => this.next(result));\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\tif (result.done) {\n\t\t\t\t\t\t\t\tif (mappedIterable.onDone) mappedIterable.onDone();\n\t\t\t\t\t\t\t\treturn result;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\t\tlet value = callback(result.value);\n\t\t\t\t\t\t\t\tif (value?.then) {\n\t\t\t\t\t\t\t\t\tif (!options.async)\n\t\t\t\t\t\t\t\t\t\tthrow new Error(\n\t\t\t\t\t\t\t\t\t\t\t'Can not synchronously iterate with promises as iterator results',\n\t\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t\treturn value.then(\n\t\t\t\t\t\t\t\t\t\t(value) => {\n\t\t\t\t\t\t\t\t\t\t\tif (\n\t\t\t\t\t\t\t\t\t\t\t\tArray.isArray(value) ||\n\t\t\t\t\t\t\t\t\t\t\t\tvalue instanceof ExtendedIterable\n\t\t\t\t\t\t\t\t\t\t\t) {\n\t\t\t\t\t\t\t\t\t\t\t\tcurrentSubIterator = value[Symbol.iterator]();\n\t\t\t\t\t\t\t\t\t\t\t\treturn this.next();\n\t\t\t\t\t\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\t\t\t\t\t\tcurrentSubIterator = null;\n\t\t\t\t\t\t\t\t\t\t\t\treturn { value };\n\t\t\t\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\t\t\t},\n\t\t\t\t\t\t\t\t\t\t(error) => {\n\t\t\t\t\t\t\t\t\t\t\tif (options.continueOnRecoverableError)\n\t\t\t\t\t\t\t\t\t\t\t\terror.continueIteration = true;\n\t\t\t\t\t\t\t\t\t\t\tthis.throw(error);\n\t\t\t\t\t\t\t\t\t\t},\n\t\t\t\t\t\t\t\t\t);\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t\tif (Array.isArray(value) || value instanceof ExtendedIterable)\n\t\t\t\t\t\t\t\t\tcurrentSubIterator = value[Symbol.iterator]();\n\t\t\t\t\t\t\t\telse {\n\t\t\t\t\t\t\t\t\tcurrentSubIterator = null;\n\t\t\t\t\t\t\t\t\treturn { value };\n\t\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\t} catch (error) {\n\t\t\t\t\t\t\t\tif (options.continueOnRecoverableError)\n\t\t\t\t\t\t\t\t\terror.continueIteration = true;\n\t\t\t\t\t\t\t\tthrow error;\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} while (true);\n\t\t\t\t\t} catch (error) {\n\t\t\t\t\t\tthis.throw(error);\n\t\t\t\t\t}\n\t\t\t\t},\n\t\t\t\treturn() {\n\t\t\t\t\tif (mappedIterable.onDone) mappedIterable.onDone();\n\t\t\t\t\tif (currentSubIterator) currentSubIterator.return();\n\t\t\t\t\treturn iterator.return();\n\t\t\t\t},\n\t\t\t\tthrow(error) {\n\t\t\t\t\tif (options.continueOnRecoverableError) throw error;\n\t\t\t\t\tif (mappedIterable.onDone) mappedIterable.onDone();\n\t\t\t\t\tif (currentSubIterator) currentSubIterator.return();\n\t\t\t\t\tthis.return();\n\t\t\t\t\tthrow error;\n\t\t\t\t},\n\t\t\t};\n\t\t};\n\t\treturn mappedIterable;\n\t}\n\n\tslice(start, end) {\n\t\tlet iterable = this.map((element, i) => {\n\t\t\tif (i < start) return SKIP;\n\t\t\tif (i >= end) {\n\t\t\t\tDONE.value = element;\n\t\t\t\treturn DONE;\n\t\t\t}\n\t\t\treturn element;\n\t\t});\n\t\titerable.handleError = (error, i) => {\n\t\t\tif (i < start) return SKIP;\n\t\t\tif (i >= end) {\n\t\t\t\treturn DONE;\n\t\t\t}\n\t\t\tthrow error;\n\t\t};\n\t\treturn iterable;\n\t}\n\tmapError(catch_callback) {\n\t\tif (typeof catch_callback !== 'function') {\n\t\t\tthrow new TypeError('Expected catch callback to be a function');\n\t\t}\n\t\tlet iterable = this.map((element) => {\n\t\t\treturn element;\n\t\t});\n\t\tlet iterate = iterable.iterate;\n\t\titerable.iterate = (options = NO_OPTIONS) => {\n\t\t\t// we need to ensure the whole stack\n\t\t\t// of iterables is set up to handle recoverable errors and continue iteration\n\t\t\treturn iterate({ ...options, continueOnRecoverableError: true });\n\t\t};\n\t\titerable.returnRecoverableErrors = catch_callback;\n\t\treturn iterable;\n\t}\n\tnext() {\n\t\tif (!this.iterator) this.iterator = this.iterate();\n\t\treturn this.iterator.next();\n\t}\n\ttoJSON() {\n\t\tif (this.asArray && this.asArray.forEach) {\n\t\t\treturn this.asArray;\n\t\t}\n\t\tconst error = new Error(\n\t\t\t'Can not serialize async iterables without first calling resolving asArray',\n\t\t);\n\t\terror.resolution = this.asArray;\n\t\tthrow error;\n\t\t//return Array.from(this)\n\t}\n\tget asArray() {\n\t\tif (this._asArray) return this._asArray;\n\t\tlet promise = new Promise((resolve, reject) => {\n\t\t\tlet iterator = this.iterate(true);\n\t\t\tlet array = [];\n\t\t\tlet iterable = this;\n\t\t\tObject.defineProperty(array, 'iterable', { value: iterable });\n\t\t\tfunction next(result) {\n\t\t\t\twhile (result.done !== true) {\n\t\t\t\t\tif (result.then) {\n\t\t\t\t\t\treturn result.then(next);\n\t\t\t\t\t} else {\n\t\t\t\t\t\tarray.push(result.value);\n\t\t\t\t\t}\n\t\t\t\t\tresult = iterator.next();\n\t\t\t\t}\n\t\t\t\tresolve((iterable._asArray = array));\n\t\t\t}\n\t\t\tnext(iterator.next());\n\t\t});\n\t\tpromise.iterable = this;\n\t\treturn this._asArray || (this._asArray = promise);\n\t}\n\tresolveData() {\n\t\treturn this.asArray;\n\t}\n\tat(index) {\n\t\tfor (let entry of this) {\n\t\t\tif (index-- === 0) return entry;\n\t\t}\n\t}\n}\nExtendedIterable.prototype.DONE = 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package.json

 {
   "name": "@harperfast/extended-iterable",
   "author": "Harper",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "Extended iterable class, providing lazy array-like methods with automatic async and return/throw forwarding",
@@ -29,3 +29,5 @@ "license": "Apache-2.0",
     "./index.js",
-    "./index.d.ts"
+    "./index.d.ts",
+    "./dist/index.cjs",
+    "./dist/index.cjs.map"
   ],
@@ -32,0 +34,0 @@ "devDependencies": {

New alerts

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Fixed alerts

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

68197

137.66%

Number of package files

7

40%

Lines of code

876

97.74%

Worsened metrics

Number of low supply chain risk alerts

2

100%

No dependency changes