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re-use text encoder
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@ -27,6 +27,7 @@ export function getPreferredLanguage(metadata?: nbformat.INotebookMetadata) {
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return translateKernelLanguageToMonaco(jupyterLanguage || defaultLanguage);
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}
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const textDecoder = new TextDecoder();
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function translateKernelLanguageToMonaco(language: string): string {
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language = language.toLowerCase();
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if (language.length === 2 && language.endsWith('#')) {
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@ -336,7 +337,7 @@ function translateCellErrorOutput(output: NotebookCellOutput): nbformat.IError {
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};
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}
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const originalError: undefined | nbformat.IError = output.metadata?.originalError;
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const value: Error = JSON.parse(new TextDecoder().decode(firstItem.data.buffer.slice(firstItem.data.byteOffset)));
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const value: Error = JSON.parse(textDecoder.decode(firstItem.data.buffer.slice(firstItem.data.byteOffset)));
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return {
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output_type: 'error',
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ename: value.name,
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@ -385,10 +386,11 @@ function convertOutputMimeToJupyterOutput(mime: string, value: Uint8Array) {
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return '';
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}
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try {
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const stringValue = new TextDecoder().decode(value.buffer.slice(value.byteOffset));
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if (mime === CellOutputMimeTypes.error) {
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const stringValue = textDecoder.decode(value.buffer.slice(value.byteOffset));
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return JSON.parse(stringValue);
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} else if (mime.startsWith('text/') || textMimeTypes.includes(mime)) {
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const stringValue = textDecoder.decode(value.buffer.slice(value.byteOffset));
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return splitMultilineString(stringValue);
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} else if (mime.startsWith('image/') && mime !== 'image/svg+xml') {
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// Images in Jupyter are stored in base64 encoded format.
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@ -397,13 +399,16 @@ function convertOutputMimeToJupyterOutput(mime: string, value: Uint8Array) {
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return Buffer.from(value).toString('base64');
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} else {
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// https://developer.mozilla.org/en-US/docs/Glossary/Base64#solution_1_%E2%80%93_escaping_the_string_before_encoding_it
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const stringValue = textDecoder.decode(value.buffer.slice(value.byteOffset));
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return btoa(encodeURIComponent(stringValue).replace(/%([0-9A-F]{2})/g, function (_match, p1) {
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return String.fromCharCode(Number.parseInt('0x' + p1));
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}));
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}
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} else if (mime.toLowerCase().includes('json')) {
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const stringValue = textDecoder.decode(value.buffer.slice(value.byteOffset));
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return stringValue.length > 0 ? JSON.parse(stringValue) : stringValue;
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} else {
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const stringValue = textDecoder.decode(value.buffer.slice(value.byteOffset));
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return stringValue;
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}
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} catch (ex) {
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