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{"version":3,"file":"workbox-range-requests.dev.js","sources":["../_version.mjs","../utils/calculateEffectiveBoundaries.mjs","../utils/parseRangeHeader.mjs","../createPartialResponse.mjs","../Plugin.mjs","../index.mjs"],"sourcesContent":["try{self['workbox:range-requests:4.3.1']&&_()}catch(e){}// eslint-disable-line","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {WorkboxError} from 'workbox-core/_private/WorkboxError.mjs';\nimport {assert} from 'workbox-core/_private/assert.mjs';\n\nimport '../_version.mjs';\n\n/**\n * @param {Blob} blob A source blob.\n * @param {number|null} start The offset to use as the start of the\n * slice.\n * @param {number|null} end The offset to use as the end of the slice.\n * @return {Object} An object with `start` and `end` properties, reflecting\n * the effective boundaries to use given the size of the blob.\n *\n * @private\n */\nfunction calculateEffectiveBoundaries(blob, start, end) {\n if (process.env.NODE_ENV !== 'production') {\n assert.isInstance(blob, Blob, {\n moduleName: 'workbox-range-requests',\n funcName: 'calculateEffectiveBoundaries',\n paramName: 'blob',\n });\n }\n\n const blobSize = blob.size;\n\n if (end > blobSize || start < 0) {\n throw new WorkboxError('range-not-satisfiable', {\n size: blobSize,\n end,\n start,\n });\n }\n\n let effectiveStart;\n let effectiveEnd;\n\n if (start === null) {\n effectiveStart = blobSize - end;\n effectiveEnd = blobSize;\n } else if (end === null) {\n effectiveStart = start;\n effectiveEnd = blobSize;\n } else {\n effectiveStart = start;\n // Range values are inclusive, so add 1 to the value.\n effectiveEnd = end + 1;\n }\n\n return {\n start: effectiveStart,\n end: effectiveEnd,\n };\n}\n\nexport {calculateEffectiveBoundaries};\n","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\nimport {WorkboxError} from 'workbox-core/_private/WorkboxError.mjs';\nimport {assert} from 'workbox-core/_private/assert.mjs';\n\nimport '../_version.mjs';\n\n/**\n * @param {string} rangeHeader A Range: header value.\n * @return {Object} An object with `start` and `end` properties, reflecting\n * the parsed value of the Range: header. If either the `start` or `end` are\n * omitted, then `null` will be returned.\n *\n * @private\n */\nfunction parseRangeHeader(rangeHeader) {\n if (process.env.NODE_ENV !== 'production') {\n assert.isType(rangeHeader, 'string', {\n moduleName: 'workbox-range-requests',\n funcName: 'parseRangeHeader',\n paramName: 'rangeHeader',\n });\n }\n\n const normalizedRangeHeader = rangeHeader.trim().toLowerCase();\n if (!normalizedRangeHeader.startsWith('bytes=')) {\n throw new WorkboxError('unit-must-be-bytes', {normalizedRangeHeader});\n }\n\n // Specifying multiple ranges separate by commas is valid syntax, but this\n // library only attempts to handle a single, contiguous sequence of bytes.\n // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Range#Syntax\n if (normalizedRangeHeader.includes(',')) {\n throw new WorkboxError('single-range-only', {normalizedRangeHeader});\n }\n\n const rangeParts = /(\\d*)-(\\d*)/.exec(normalizedRangeHeader);\n // We need either at least one of the start or end values.\n if (rangeParts === null || !(rangeParts[1] || rangeParts[2])) {\n throw new WorkboxError('invalid-range-values', {normalizedRangeHeader});\n }\n\n return {\n start: rangeParts[1] === '' ? null : Number(rangeParts[1]),\n end: rangeParts[2] === '' ? null : Number(rangeParts[2]),\n };\n}\n\nexport {parseRangeHeader};\n","/*\n Copyright 2018 Google LLC\n\n Use of this source code is governed by an MIT-style\n license that can be found in the LICENSE file or at\n https://opensource.org/licenses/MIT.\n*/\n\n
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