IfcParserStream

Parses the ISO 10303-21 statements of an IFC file into web-ifc entities, matching the shape IfcAPI.GetLine returns (attributes hold typed value wrappers, refs are { type: 5, value } handles, omitted attributes are null). Statements may span physical lines, share a line, or be interleaved with /* ... */ comments and blank lines. Entity types outside the file's declared schema are skipped, like web-ifc does. The stream errors on corrupted statements and on input that ends before END-ISO-10303-21;, so truncated files are not mistaken for complete ones.

Example

let blob: Blob;

// node
blob = await fs.openAsBlob(path, { type: "text/plain" });

const ifcStream = blob
  .stream()
  .pipeThrough(new IfcDecoderStream())
  .pipeThrough(new IfcParserStream());

for await (const entity of ifcStream) {
  const localId = entity.expressID;
  const type = entity.type;
}

Extends

• TransformStream<string, webIfc.IfcLineObject>